{"title":"SINOFUSE RS309-MF Series 700V\/750V High-Speed Bolt-Mounted Fuses","description":"\u003ch2\u003eSINOFUSE RS309-MF Series High-Speed Bolt-Mounted Fuses\u003c\/h2\u003e\n\n\u003cp\u003e\nThe SINOFUSE RS309-MF Series is a cylindrical bolt-mounted high-speed fuse family designed for demanding AC and DC protection applications. The series covers current ratings from 5A to 800A and supports AC\/DC 700V under IEC ratings and DC 750V under UL ratings.\n\u003c\/p\u003e\n\n\u003cp\u003e\nRS309-MF fuses feature a compact construction, low pre-arcing I²t, high interrupting capability, and strong resistance to electrical and mechanical stress. They are suitable for applications requiring fast protection of power electronic and high-current DC systems.\n\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e SINOFUSE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e RS309-MF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e AC\/DC 700V (IEC), DC 750V (UL)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Current Range:\u003c\/strong\u003e 5A to 800A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUtilization Category:\u003c\/strong\u003e aR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreaking Capacity:\u003c\/strong\u003e AC 100kA, DC 50kA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-mounted connection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e UL248, IEC 60269\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE and UL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvironmental Compliance:\u003c\/strong\u003e RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eElectric vehicle drive power systems\u003c\/li\u003e\n  \u003cli\u003ePower conversion systems\u003c\/li\u003e\n  \u003cli\u003eBattery energy storage systems\u003c\/li\u003e\n  \u003cli\u003ePower and energy systems\u003c\/li\u003e\n  \u003cli\u003eVariable frequency controllers\u003c\/li\u003e\n  \u003cli\u003eCharging equipment\u003c\/li\u003e\n  \u003cli\u003eConductors and automotive electrical equipment\u003c\/li\u003e\n  \u003cli\u003eShort-circuit, overload, and backup protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRS309-MF Current Ratings\u003c\/h3\u003e\n\n\u003cp\u003e\nThe SINOFUSE RS309-MF Series is available in a broad range of current ratings from 5A to 800A, including 10A, 20A, 30A, 50A, 100A, 200A, 300A, 400A, 500A, 600A, 700A, and 800A variants.\n\u003c\/p\u003e\n\n\u003ch3\u003eTechnical and Sourcing Support\u003c\/h3\u003e\n\n\u003cp\u003e\nApexon Solutions provides sourcing support for SINOFUSE RS309-MF high-speed fuses and other industrial electrical protection products. Contact us for model availability, technical specifications, and quotation requests.\n\u003c\/p\u003e","products":[{"product_id":"sinofuse-rs309-mf-60a-750v-fuses","title":"SINOFUSE RS309-MF-60A Bolt-Mounted High-Speed Fuse, 60A, 700V IEC \/ 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-60A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 60A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 60A variant, the manufacturer specifies a pre-arcing I²t of 275 A²s, total clearing I²t of 1,020 A²s, and rated power dissipation of 14.5W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-60A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e60A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e275 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e1,020 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e14.5W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e3SA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e65 ±3g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM8 mounting bolts; recommended torque 12 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-60A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67663468331287,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67663468364055,"sku":null,"price":130.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67663468396823,"sku":null,"price":220.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67663468429591,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-60ABolt-MountedHigh-SpeedFuse-60A700VIEC-ProductImage.webp?v=1791296522"},{"product_id":"sinofuse-rs309-mf-70a-750v-fuses","title":"SINOFUSE RS309-MF-70A Bolt-Mounted High-Speed Fuse, 70A, 700V IEC \/ 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-70A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 70A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 70A variant, the manufacturer specifies a pre-arcing I²t of 340 A²s, total clearing I²t of 1,760 A²s, and rated power dissipation of 18W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-70A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e70A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e340 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e1,760 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e18W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e4SB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 110mm; B 24mm; C 66mm; D 84mm; E 95.5mm; F 9mm; G 18mm; H 3.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e95 ±5g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM8 mounting bolts; recommended torque 12 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-70A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67645545644311,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67645545677079,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67645545709847,"sku":null,"price":220.0,"currency_code":"USD","in_stock":true},{"title":"12 pcs","offer_id":67645545742615,"sku":null,"price":380.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-70ABolt-MountedHigh-SpeedFuse-70A700VIEC-ProductImage.webp?v=1791256327"},{"product_id":"sinofuse-rs309-mf-80a-750v-fuses","title":"SINOFUSE RS309-MF-80A Bolt-Mounted High-Speed Fuse, 80A, 700V IEC \/ 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-80A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 80A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 80A variant, the manufacturer specifies a pre-arcing I²t of 430 A²s, total clearing I²t of 2,080 A²s, and rated power dissipation of 20W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e430 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e2,080 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e20W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e4SB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 110mm; B 24mm; C 66mm; D 84mm; E 95.5mm; F 9mm; G 18mm; H 3.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e95 ±5g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM8 mounting bolts; recommended torque 12 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-80A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67646272798999,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67646272831767,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67646272864535,"sku":null,"price":220.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67646272897303,"sku":null,"price":380.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-80ABolt-MountedHigh-SpeedFuse-80A700VIEC-ProductImage.webp?v=1791258935"},{"product_id":"sinofuse-rs309-mf-100a-750v-fuses","title":"Sinofuse RS309-MF-100A High-Speed Bolt-Mounted Fuse, 100A aR, 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSinofuse RS309-MF-100A\u003c\/strong\u003e is an RS309-MF high-speed bolt-mounted fuse with 100A rated current, aR utilization category, and 4SB size code. The datasheet lists AC\/DC700V under IEC and DC750V under UL, with high breaking capacity for industrial circuit protection and power electronics applications.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct ID \/ MPN\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-100A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand \/ Series \/ Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSinofuse RS309-MF high-speed bolt-mounted fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC700V IEC; DC750V UL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e100A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC100kA; DC50kA, time constant ≤15ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eI²t Values\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePre-arcing 690 A²s; melting 3400 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Loss\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e25W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e4SB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMechanical Specs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 110mm; B 24mm; C 66mm; D 84mm; E 95.5mm; F 9mm; G 18mm; H 3.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting \/ Terminal \/ Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM8 mounting bolt; recommended torque 12±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e95±5g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Certifications\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eUL248; IEC60269; CE; UL; RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eTypical applications include electric vehicle drive power systems, power conversion systems, energy storage and power systems, variable-frequency controllers, chargers, conductors, and vehicle electrical devices requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement review for Sinofuse RS309-MF-100A fuses. Buyers should verify current rating, voltage rating, utilization category, breaking capacity, size code, mounting bolt, torque requirement, and installation dimensions against the equipment documentation before replacement.\u003c\/p\u003e\n\u003cp\u003eSend the MPN, required quantity, and application requirements for RFQ support. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":53541791793431,"sku":null,"price":40.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":53541791826199,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":53541791858967,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true},{"title":"12 pcs","offer_id":53541791891735,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/image_46f989f5-926a-4734-8a05-27a4ad9d52ac.webp?v=1781586639"},{"product_id":"sinofuse-rs309-mf-150a-750v-fuses","title":"SINOFUSE RS309-MF-150A Bolt-Mounted High-Speed Fuse, 150A, 700V IEC \/ 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-150A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 150A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 150A variant, the manufacturer specifies a pre-arcing I²t of 3,110 A²s, total clearing I²t of 9,900 A²s, and rated power dissipation of 32W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-150A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e150A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e3,110 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e9,900 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e32W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e6TA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 129mm; B 38mm; C 68mm; D 89.5mm; E 109mm; F 10.5mm; G 30mm; H 5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e256 ±10g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM10 mounting bolts; recommended torque 21 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-150A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67663115157783,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67663115190551,"sku":null,"price":130.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67663115223319,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67663115256087,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-150ABolt-MountedHigh-SpeedFuse-150A700VIEC-ProductImage.webp?v=1791295753"},{"product_id":"sinofuse-rs309-mf-250a-750v-fuses","title":"SINOFUSE RS309-MF-250A Bolt-Mounted High-Speed Fuse, 250A, 700V IEC \/ 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-250A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 250A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 250A variant, the manufacturer specifies a pre-arcing I²t of 11,900 A²s, total clearing I²t of 39,900 A²s, and rated power dissipation of 47.5W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e11,900 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e39,900 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e47.5W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e7TA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 129mm; B 49mm; C 72mm; D 89.5mm; E 109mm; F 10.5mm; G 38mm; H 6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e447 ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM10 mounting bolts; recommended torque 21 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-250A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67646699241751,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67646699274519,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67646699307287,"sku":null,"price":220.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67646699340055,"sku":null,"price":380.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-250ABolt-MountedHigh-SpeedFuse-250A700VIEC-ProductImage.webp?v=1791259734"},{"product_id":"sinofuse-rs309-mf-275a-750v-fuses","title":"SINOFUSE RS309-MF-275A Bolt-Mounted High-Speed Fuse, 275A, 700V IEC \/ 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-275A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 275A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 275A variant, the manufacturer specifies a pre-arcing I²t of 14,500 A²s, total clearing I²t of 48,900 A²s, and rated power dissipation of 51W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-275A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e275A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e14,500 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e48,900 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e51W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e7TA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 129mm; B 49mm; C 72mm; D 89.5mm; E 109mm; F 10.5mm; G 38mm; H 6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e447 ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM10 mounting bolts; recommended torque 21 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-275A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67646582259991,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67646582292759,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67646582325527,"sku":null,"price":220.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67646582358295,"sku":null,"price":380.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-275ABolt-MountedHigh-SpeedFuse-275A700VIEC-ProductImage.webp?v=1791259320"},{"product_id":"sinofuse-rs309-mf-300a-750v-fuses","title":"SINOFUSE RS309-MF-300A Bolt-Mounted High-Speed Fuse, 300A, 700V IEC \/ 750V UL","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-300A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 300A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 300A variant, the manufacturer specifies a pre-arcing I²t of 17,500 A²s, total clearing I²t of 58,800 A²s, and rated power dissipation of 56W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e17,500 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e58,800 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e56W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e7TA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 129mm; B 49mm; C 72mm; D 89.5mm; E 109mm; F 10.5mm; G 38mm; H 6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e447 ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM10 mounting bolts; recommended torque 21 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-300A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67645468573975,"sku":null,"price":40.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67645468606743,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67645468639511,"sku":null,"price":220.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67645468672279,"sku":null,"price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-300ABolt-MountedHigh-SpeedFuse-300A700VIEC-ProductImage.webp?v=1791255645"},{"product_id":"sinofuse-rs309-mf-350a-750v-fuses","title":"Sinofuse RS309-MF-350A High-Speed Bolt-Mounted Fuse, 350A, DC750V UL","description":"\u003cp\u003e\u003cstrong\u003eSinofuse RS309-MF-350A\u003c\/strong\u003e is an RS309-MF cylindrical bolt-mounted high-speed fuse for circuit protection in power electronics, EV power systems, energy storage, drive systems, chargers, conductors, and related vehicle equipment. Verified ratings include 350A rated current, AC\/DC700V under IEC, DC750V under UL, aR utilization category, and high breaking capacity for short-circuit, overload, and backup protection.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct ID \/ MPN\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-350A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSinofuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSeries \/ Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF high-speed cylindrical bolt-mounted fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e350A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC700V IEC; DC750V UL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC100kA; DC50kA, time constant ≤15ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eI²t Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePre-arcing 23700 A²s; operating 86500 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e64W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e7TA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMechanical Specs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eDimensions: A 129mm, B 49mm, C 72mm, D 89.5mm, E 109mm, F 10.5mm, G 38mm, H 6mm; weight 447±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting \/ Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM10 mounting bolt; recommended torque 21±1N.m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eEnvironmental Ratings\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eNormal ambient operating condition -5°C to 40°C; permitted ambient operating condition -40°C to 85°C; pollution degree III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Certifications\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL248 and IEC60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eInstallation Notes\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRecommended long-term current should not exceed 80% of rated current; fuse may be mounted vertically, horizontally, or inclined\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eTypical applications include electric vehicle drive power systems, power conversion systems, energy storage and power systems, variable-frequency controllers, chargers, conductors, and vehicle equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement review for Sinofuse RS309-MF-350A fuses, helping procurement teams compare verified electrical ratings, I²t values, mounting requirements, and dimensional data against equipment requirements.\u003c\/p\u003e\n\u003cp\u003eSend the MPN, required quantity, and application details for RFQ support. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":53542559973655,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":53542560006423,"sku":null,"price":130.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":53542560039191,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true},{"title":"12 pcs","offer_id":53542560071959,"sku":null,"price":460.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/image_fa88acd2-7cde-4795-8419-25ea31840152.webp?v=1781610726"},{"product_id":"sinofuse-rs309-mf-600a-750v-fuses","title":"SINOFUSE RS309-MF-600A Bolt-Mounted High-Speed Fuse, 600A, 700V AC\/DC","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-600A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 600A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with aR utilization category. For the 600A variant, the manufacturer specifies a pre-arcing I²t of 76,600 A²s, total clearing I²t of 249,000 A²s, and rated power dissipation of 120W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-600A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e600A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e76,600 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e249,000 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e120W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e7TD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e527 ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM12 mounting bolts; recommended torque 28 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-600A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67645427548439,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67645427581207,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67645427613975,"sku":null,"price":220.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67645427646743,"sku":null,"price":350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-600ABolt-MountedHigh-SpeedFuse-600A700VAC_DC-ProductImage.webp?v=1791254554"},{"product_id":"sinofuse-rs309-mf-800a-750v-fuses","title":"SINOFUSE RS309-MF-800A Bolt-Mounted High-Speed Fuse, 800A, 700V AC\/DC","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-800A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 800A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with aR utilization category and high breaking capacity. For the 800A variant, the manufacturer specifies a pre-arcing I²t of 124,000 A²s, total clearing I²t of 428,000 A²s, and rated power dissipation of 140W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-800A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e800A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e124,000 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e428,000 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e140W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e7TC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e515 ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM12 mounting bolts; recommended torque 28 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-800A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67645323608343,"sku":null,"price":45.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67645323641111,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67645323673879,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67645323706647,"sku":null,"price":360.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-800ABolt-MountedHigh-SpeedFuse-800A700VAC_DC-ProductImage.webp?v=1791253099"},{"product_id":"sinofuse-zef-500-1000vdc-holder-2-pieces","title":"SINOFUSE RS309-MF 500A Holder (2 Pieces)","description":"\u003cp\u003eIntroducing the SINOFUSE RS309-MF 500A Holder, designed for easy installation and efficiency. With a maximum current rating of 500A, this holder guarantees safe and reliable use for your circuit. Comes in a set of two for convenience and versatility. Keep your circuit protected with the SINOFUSE RS309-MF 500A Holder.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"Default Title","offer_id":48162236662039,"sku":null,"price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-sinofuse-rs309-mf-500a-holder-2-pieces-1212527624.jpg?v=1766430602"},{"product_id":"sinofuse-rs309-mf-300a-holder-2-pieces","title":"SINOFUSE RS309-MF 300A Holder (2 Pieces)","description":"\u003cp\u003eThe SINOFUSE RS309-MF 300A Holder (2 Pieces) is a powerful and durable solution for safely holding and protecting 300A fuses. With its high-quality construction and precise fit, it ensures optimal performance and reliability. Effortlessly secure your fuses with this expertly crafted holder for peace of mind and maximum functionality.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"Default Title","offer_id":48281831538967,"sku":null,"price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-sinofuse-rs309-mf-300a-holder-2-pieces-1212527225.jpg?v=1766426044"},{"product_id":"sinofuse-rs309-mf-700a-bolt-mounted-high-speed-fuse-700a-700v-ac-dc","title":"SINOFUSE RS309-MF-700A Bolt-Mounted High-Speed Fuse, 700A, 700V AC\/DC","description":"\u003cp\u003e\u003cstrong\u003eSINOFUSE RS309-MF-700A\u003c\/strong\u003e is a cylindrical bolt-mounted high-speed fuse rated at 700A. The RS309-MF series is rated for AC\/DC 700V under IEC requirements and DC 750V under UL requirements, with aR utilization category and high breaking capacity. For the 700A variant, the manufacturer specifies a pre-arcing I²t of 95,700 A²s, total clearing I²t of 325,000 A²s, and rated power dissipation of 125W.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eSINOFUSE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-700A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eCylindrical bolt-mounted high-speed fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e700A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC\/DC 700V (IEC); DC 750V (UL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eUtilization Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBreaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eAC 100kA; DC 50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e95,700 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e325,000 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eRated Power Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e125W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eSize Code\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e7TC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 168mm; B 49mm; C 72mm; D 128.5mm; E 141.5mm; F 16mm; G 38mm; H 6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e515 ±15g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM12 mounting bolts; recommended torque 28 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Compliance\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003ePerformance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eTypical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.\u003c\/p\u003e\n\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.\u003c\/p\u003e\n\n\u003cp\u003eFor an RFQ, specify \u003cstrong\u003eSINOFUSE RS309-MF-700A\u003c\/strong\u003e, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67645387997463,"sku":null,"price":45.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67645388030231,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67645388062999,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67645388095767,"sku":null,"price":360.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SINOFUSERS309-MF-700ABolt-MountedHigh-SpeedFuse-700A700VAC_DC-ProductImage.webp?v=1791254304"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/collections\/SINOFUSERS309-MF-800ABolt-MountedHigh-SpeedFuse-800A700VAC_DC-ProductImage.webp?v=1791253570","url":"https:\/\/www.apexonsupply.com\/collections\/sinofuse-rs309-mf-high-speed-bolt-mounted-fuse.oembed","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}