{"title":"SINOFUSE RS309-MF-S Series 700V\/750V High-Speed Bolt-Connected Fuses","description":"\u003ch2\u003eSINOFUSE RS309-MF-S Series 700V\/750V High-Speed Bolt-Connected Fuses\u003c\/h2\u003e\n\n\u003cp\u003e\nThe SINOFUSE RS309-MF-S Series is a cylindrical bolt-connected high-speed fuse family designed for demanding AC and DC electrical protection applications. The series is rated at AC\/DC 700V under IEC specifications and DC 750V under UL specifications.\n\u003c\/p\u003e\n\n\u003cp\u003e\nRS309-MF-S fuses feature an aR utilization category, compact construction, low I²t characteristics, high breaking capacity, and resistance to current surges, mechanical vibration, impact, and demanding operating environments.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe series includes 16 rated-current options across two ranges: 70A–100A and 225A–800A. These models support electrical protection requirements in electric vehicle systems, energy storage, power conversion equipment, and industrial power electronics.\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-S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Cylindrical bolt-connected high-speed fuse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIEC Rated Voltage:\u003c\/strong\u003e AC\/DC 700V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL Rated Voltage:\u003c\/strong\u003e DC 750V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Current Ranges:\u003c\/strong\u003e 70A–100A and 225A–800A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUtilization Category:\u003c\/strong\u003e aR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC Breaking Capacity:\u003c\/strong\u003e 100kA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC Breaking Capacity:\u003c\/strong\u003e 50kA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC Time Constant:\u003c\/strong\u003e ≤15ms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance Standards:\u003c\/strong\u003e UL 248 and IEC 60269\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication Reliability References:\u003c\/strong\u003e ISO 8820 and GB\/T 31465\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e CE and UL, as specified by the manufacturer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvironmental Compliance:\u003c\/strong\u003e RoHS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRS309-MF-S Model Range\u003c\/h3\u003e\n\n\u003cp\u003e\nThe RS309-MF-S family includes 16 current ratings across three mechanical size groups: 3SA, 6TA, and 7TA. Each group has specific mounting requirements and recommended tightening torque.\n\u003c\/p\u003e\n\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eSize Code\u003c\/th\u003e\n      \u003cth\u003eRated Current\u003c\/th\u003e\n      \u003cth\u003eMounting Bolt\u003c\/th\u003e\n      \u003cth\u003eRecommended Torque\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e3SA\u003c\/td\u003e\n      \u003ctd\u003e70A, 80A, 90A, 100A\u003c\/td\u003e\n      \u003ctd\u003eM8\u003c\/td\u003e\n      \u003ctd\u003e12 ±1 N·m\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e6TA\u003c\/td\u003e\n      \u003ctd\u003e225A, 250A, 275A, 300A, 325A, 350A, 400A\u003c\/td\u003e\n      \u003ctd\u003eM10\u003c\/td\u003e\n      \u003ctd\u003e21 ±1 N·m\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e7TA\u003c\/td\u003e\n      \u003ctd\u003e450A, 500A, 600A, 700A, 800A\u003c\/td\u003e\n      \u003ctd\u003eM10\u003c\/td\u003e\n      \u003ctd\u003e21 ±1 N·m\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAvailable RS309-MF-S Models\u003c\/h3\u003e\n\n\u003cp\u003e\nThe manufacturer specifies the following current ratings across the RS309-MF-S family:\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n    \u003cstrong\u003e3SA Models:\u003c\/strong\u003e\n    RS309-MF-S70A, RS309-MF-S80A, RS309-MF-S90A, RS309-MF-S100A\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003e6TA Models:\u003c\/strong\u003e\n    RS309-MF-S225A, RS309-MF-S250A, RS309-MF-S275A, RS309-MF-S300A, RS309-MF-S325A, RS309-MF-S350A, RS309-MF-S400A\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003cstrong\u003e7TA Models:\u003c\/strong\u003e\n    RS309-MF-S450A, RS309-MF-S500A, RS309-MF-S600A, RS309-MF-S700A, RS309-MF-S800A\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRS309-MF-S Technical Guide\u003c\/h3\u003e\n\n\u003cp\u003e\nFor detailed electrical specifications, model-specific I²t characteristics, power-loss data, mechanical dimensions, mounting requirements, operating conditions, and application information, visit the dedicated RS309-MF-S Series technical page.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  \u003ca href=\"\/pages\/sinofuse-rs309-mf-s-700v-750v-high-speed-bolt-connected-fuse-series\"\u003e\n    \u003cstrong\u003eSINOFUSE RS309-MF-S Series 700V\/750V High-Speed Bolt-Connected Fuse Technical Guide\u003c\/strong\u003e\n  \u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\n\u003cp\u003e\nAccording to the manufacturer specification, the RS309-MF-S Series is intended for electrical protection applications involving electric vehicles, power conversion systems, energy storage equipment, and other demanding power-electronic installations.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eElectric vehicle traction and drive systems\u003c\/li\u003e\n  \u003cli\u003ePower conversion equipment\u003c\/li\u003e\n  \u003cli\u003eEnergy storage and battery power systems\u003c\/li\u003e\n  \u003cli\u003eVariable frequency controllers\u003c\/li\u003e\n  \u003cli\u003eEV charging equipment\u003c\/li\u003e\n  \u003cli\u003eIndustrial power electronics\u003c\/li\u003e\n  \u003cli\u003eElectrical conductors and vehicle equipment\u003c\/li\u003e\n  \u003cli\u003eShort-circuit protection\u003c\/li\u003e\n  \u003cli\u003eBackup protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHigh-Speed Fuse Selection Considerations\u003c\/h3\u003e\n\n\u003cp\u003e\nThe RS309-MF-S Series uses the aR utilization category, making fuse coordination and current-limiting performance important considerations in electrical protection system design.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhen selecting an RS309-MF-S fuse, engineers should verify the exact model number, rated current, applicable voltage rating, breaking capacity, pre-arcing I²t, total clearing I²t, power loss, mechanical dimensions, and mounting requirements.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBecause aR fuses are intended for partial-range protection, additional overload protection or appropriate system coordination may be required.\n\u003c\/p\u003e\n\n\u003ch3\u003eOperating Conditions\u003c\/h3\u003e\n\n\u003cp\u003e\nThe manufacturer recommends that long-term continuous operating current should not exceed 80% of the fuse rated current under normal operating conditions.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormal Ambient Temperature:\u003c\/strong\u003e -5°C to 40°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePermitted Ambient Temperature:\u003c\/strong\u003e -40°C to 120°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNormal Operating Altitude:\u003c\/strong\u003e Up to 2000m\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePermitted Operating Altitude:\u003c\/strong\u003e Up to 4500m, subject to application requirements\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePollution Degree:\u003c\/strong\u003e Class III\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\nApplications involving elevated temperatures, enclosed installations, or high-altitude operating environments may require current derating or additional technical evaluation.\n\u003c\/p\u003e\n\n\u003ch3\u003eRelated SINOFUSE Technical Resources\u003c\/h3\u003e\n\n\u003cp\u003e\nFor additional information about SINOFUSE fuse families, technical specifications, and related circuit protection products, explore the following resources:\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n    \u003ca href=\"\/pages\/sinofuse-fuses\"\u003e\n      SINOFUSE Fuse Solutions – Brand \u0026amp; Technical Overview\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003ca href=\"\/pages\/sinofuse-rs309-mf-series-700v-750v-high-speed-bolt-mounted-fuse\"\u003e\n      SINOFUSE RS309-MF Series 700V\/750V High-Speed Bolt-Mounted Fuse\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n\n  \u003cli\u003e\n    \u003ca href=\"\/pages\/sinofuse-rs309-mf-ev-750v-gr-cylindrical-bolt-connected-fuse-series\"\u003e\n      SINOFUSE RS309-MF-EV Series AC\/DC 750V gR Cylindrical Bolt-Connected Fuse\n    \u003c\/a\u003e\n  \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eSeries Selection Note:\u003c\/strong\u003e RS309-MF-S, RS309-MF, and RS309-MF-EV are separate fuse families. Similar voltage or current ratings do not establish electrical or mechanical interchangeability. Exact replacement suitability should be verified using the applicable manufacturer specifications.\n\u003c\/p\u003e\n\n\u003ch3\u003eIndustrial Sourcing Support\u003c\/h3\u003e\n\n\u003cp\u003e\nApexon Supply supports industrial buyers with SINOFUSE product identification, specification review, model selection, technical cross-reference, and international sourcing coordination.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor RS309-MF-S product availability, technical information, or quotation requests, please provide the exact model number, rated current, required quantity, and available application information.\n\u003c\/p\u003e","products":[{"product_id":"sinofuse-rs309-mf-s250a-high-speed-fuse","title":"Sinofuse RS309-MF-S250A High-Speed Bolt-Mounted Fuse, 250 A, 700 V AC\/DC (IEC)","description":"\u003cp\u003eThe \u003cstrong\u003eSinofuse RS309-MF-S250A\u003c\/strong\u003e is a 250 A cylindrical, bolt-mounted high-speed fuse with an aR utilization category. It is rated for 700 V AC\/DC under IEC and 750 V DC under UL, with M10 mounting bolts and a recommended tightening torque of 21 ± 1 N·m.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S250A\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;\"\u003e250 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 12,300 A²s; total clearing: 40,300 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e47.5 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eBolt-mounted; M10 bolts; recommended torque 21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and your equipment requirements to Apexon Supply for a sourcing enquiry. For replacement enquiries, include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for technical comparison.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for Sinofuse RS309-MF-S250A with the required quantity, destination, and any documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67740385935639,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67740385968407,"sku":null,"price":140.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67740386001175,"sku":null,"price":260.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67740386033943,"sku":null,"price":450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s250a-high-speed-bolt-mounted-fuse.webp?v=1791796268"},{"product_id":"sinofuse-rs309-mf-s275a-cylindrical-bolt-on-fuse","title":"SINOFUSE RS309-MF-S275A High-Speed Cylindrical Bolt-On Fuse, 275 A, 700 V AC\/DC (IEC) \/ 750 V DC (UL)","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S275A\u003c\/strong\u003e is a 275 A high-speed cylindrical bolt-on fuse in the RS309-MF-S series. It has an aR utilization category, size code 6TA, and M10 bolt mounting. Its voltage ratings are 700 V AC\/DC under IEC and 750 V DC under UL.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S275A\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;\"\u003e275 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 15,300 A²s; total clearing: 49,700 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e51 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM10 bolts; recommended tightening torque 21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and equipment requirements to Apexon Supply for a sourcing enquiry. Include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for replacement comparisons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for SINOFUSE RS309-MF-S275A with the required quantity, destination, and documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67741136486679,"sku":null,"price":65.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67741136519447,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67741136552215,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67741136584983,"sku":null,"price":550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s275a-high-speed-cylindrical-bolt-on-fuse.webp?v=1791804556"},{"product_id":"sinofuse-rs309-mf-s500a-cylindrical-bolt-on-fuse","title":"SINOFUSE RS309-MF-S500A Cylindrical Bolt-On High-Speed Fuse, 500 A, 700 V AC\/DC (IEC) \/ 750 V DC (UL)","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S500A\u003c\/strong\u003e is a 500 A cylindrical bolt-on high-speed fuse in the RS309-MF-S series. It has an aR utilization category and size code 7TA. Its voltage ratings are 700 V AC\/DC under IEC and 750 V DC under UL.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S500A\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;\"\u003e500 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 56,000 A²s; total clearing: 168,000 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e105 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eBolt-on; M10 bolts; recommended tightening torque 21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and equipment requirements to Apexon Supply for a sourcing enquiry. Include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for replacement comparisons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for SINOFUSE RS309-MF-S500A with the required quantity, destination, and documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67741116399895,"sku":null,"price":65.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67741116432663,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67741116465431,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67741116498199,"sku":null,"price":580.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s500a-cylindrical-bolt-on-high-speed-fuse.webp?v=1791804085"},{"product_id":"sinofuse-rs309-mf-s100a-high-speed-fuse","title":"SinoFuse RS309-MF-S100A High-Speed Bolt-Mounted Fuse, 100 A, 700 V AC\/DC (IEC)","description":"\u003cp\u003e\u003cstrong\u003eSinoFuse RS309-MF-S100A\u003c\/strong\u003e is a 100 A cylindrical, bolt-mounted high-speed fuse in the RS309-MF-S series. Its utilization category is aR.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S100A\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;\"\u003e100 A\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;\"\u003e700 V AC\/DC (IEC); 750 V DC (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;\"\u003e100 kA AC; 50 kA DC at a time constant of ≤15 ms\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;\"\u003e1,100 A²s (DC test data)\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 I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e4,980 A²s (DC test data)\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e25 W\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 and mounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e3SA; M8 mounting bolts; recommended torque 12 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe manufacturer identifies electric vehicle drive power systems, power conversion systems, energy storage systems, variable-frequency controllers and chargers as applications for this series.\u003c\/p\u003e\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement identification. Check the electrical ratings, aR category, 3SA size code and mounting requirements against your equipment specifications.\u003c\/p\u003e\n\u003cp\u003eRequest a quote for \u003cstrong\u003eSinoFuse RS309-MF-S100A\u003c\/strong\u003e with your required quantity and application details.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67738631864599,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67738631897367,"sku":null,"price":130.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67738631930135,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67738631962903,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s100a-high-speed-bolt-mounted-fuse.webp?v=1791780378"},{"product_id":"sinofuse-rs309-mf-s225a-750v-fuses","title":"SINOFUSE RS309-MF-S225A Cylindrical Bolt-Mount High-Speed Fuse, 225 A, 700 V AC\/DC (IEC)","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S225A\u003c\/strong\u003e is a 225 A cylindrical bolt-mount high-speed fuse with an aR utilization category. It features a 6TA size code, M10 mounting bolts, and voltage ratings of 700 V AC\/DC under IEC and 750 V DC under UL.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S225A\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;\"\u003e225 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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;\"\u003e100 kA AC; 50 kA DC with time constant ≤15 ms\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;\"\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e9,200 A²s; DC test data\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;\"\u003e29,900 A²s; DC test data\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;\"\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e45 W\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 bolts; recommended tightening torque 21 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Electric vehicle drive power systems, power conversion systems, energy storage systems, frequency controllers, and chargers requiring high-speed short-circuit protection.\u003c\/p\u003e\n\u003cp\u003eFor B2B sourcing and replacement enquiries, provide the exact model, existing fuse label, mounting requirements, and operating conditions to support specification matching.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quote for SINOFUSE RS309-MF-S225A:\u003c\/strong\u003e Send your required quantity, delivery destination, and technical documentation requirements to Apexon Supply.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":53079018995991,"sku":null,"price":40.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":53079019028759,"sku":null,"price":110.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":53079019061527,"sku":null,"price":210.0,"currency_code":"USD","in_stock":true},{"title":"12 pcs","offer_id":53079019094295,"sku":null,"price":410.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-sinofuse-rs309-mf-s225a-750v-fuses-3-pieces-1212527513.jpg?v=1766452205"},{"product_id":"sinofuse-rs309-mf-s350a-high-speed-fuse","title":"SINOFUSE RS309-MF-S350A High-Speed Bolt-Mounted Fuse, 350 A, 750 V DC (UL) \/ 700 V AC\/DC (IEC)","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S350A\u003c\/strong\u003e is a 350 A cylindrical, bolt-mounted high-speed fuse in the RS309-MF-S series. It has an aR utilization category and size code 6TA. Its voltage ratings are 700 V AC\/DC under IEC and 750 V DC under UL.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S350A\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;\"\u003e350 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 28,500 A²s; total clearing: 88,900 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e64 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eBolt-mounted; M10 bolts; recommended tightening torque 21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and equipment requirements to Apexon Supply for a sourcing enquiry. Include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for replacement comparisons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for SINOFUSE RS309-MF-S350A with the required quantity, destination, and documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67741005512983,"sku":null,"price":65.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67741005545751,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67741005578519,"sku":null,"price":340.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67741005611287,"sku":null,"price":550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s350a-high-speed-bolt-mounted-fuse.webp?v=1791801786"},{"product_id":"sinofuse-rs309-mf-s400a-cylindrical-bolt-on-fuse","title":"SINOFUSE RS309-MF-S400A Cylindrical Bolt-On Fuse, 400 A, 700 V AC\/DC (IEC) \/ 750 V DC (UL)","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S400A\u003c\/strong\u003e is a 400 A cylindrical bolt-on high-speed fuse in the RS309-MF-S series. It has an aR utilization category and size code 6TA. Its voltage ratings are 700 V AC\/DC under IEC and 750 V DC under UL.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S400A\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;\"\u003e400 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 52,000 A²s; total clearing: 119,000 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e77 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eBolt-on; M10 bolts; recommended tightening torque 21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and equipment requirements to Apexon Supply for a sourcing enquiry. Include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for replacement comparisons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for SINOFUSE RS309-MF-S400A with the required quantity, destination, and documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67741032710423,"sku":null,"price":70.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67741032743191,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67741032775959,"sku":null,"price":350.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67741032808727,"sku":null,"price":580.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s400a-cylindrical-bolt-on-high-speed-fuse.webp?v=1791802519"},{"product_id":"sinofuse-rs309-mf-s450a-high-speed-fuse","title":"SINOFUSE RS309-MF-S450A Cylindrical Bolt-On High-Speed Fuse, 450 A, 750 V DC (UL) \/ 700 V AC\/DC (IEC)","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S450A\u003c\/strong\u003e is a 450 A cylindrical bolt-on high-speed fuse in the RS309-MF-S series. It has an aR utilization category and size code 7TA, with voltage ratings of 750 V DC under UL and 700 V AC\/DC under IEC.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S450A\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;\"\u003e450 A\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;\"\u003eUL: 750 V DC; IEC: 700 V AC\/DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 41,500 A²s; total clearing: 132,000 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e95 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eBolt-on; M10 bolts; recommended tightening torque 21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and equipment requirements to Apexon Supply for a sourcing enquiry. Include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for replacement comparisons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for SINOFUSE RS309-MF-S450A with the required quantity, destination, and documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67740910649623,"sku":null,"price":70.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67740910682391,"sku":null,"price":160.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67740910715159,"sku":null,"price":300.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67740910747927,"sku":null,"price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s450a-cylindrical-bolt-on-high-speed-fuse.webp?v=1791801245"},{"product_id":"sinofuse-rs309-mf-s800a-750v-fuses","title":"SINOFUSE RS309-MF-S800A RS309-MF-S Series High-Speed Fuse, 800A, 700V AC\/DC \/ 750V, aR","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S800A\u003c\/strong\u003e is an 800 A cylindrical, bolt-mounted high-speed fuse in the RS309-MF-S series, with an aR utilization category. Its rated voltage is 700 V AC\/DC under IEC and 750 V DC under UL. Installation uses M10 bolts with a recommended tightening torque of 21 ± 1 N·m.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S800A\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;\"\u003e800 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 124,000 A²s; total clearing: 428,000 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e140 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eBolt-mounted; M10 bolts; recommended torque 21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and equipment requirements to Apexon Supply for a sourcing enquiry. For replacement enquiries, include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for technical comparison.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for SINOFUSE RS309-MF-S800A with the required quantity, destination, and documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":53079066149143,"sku":null,"price":75.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":53079066181911,"sku":null,"price":210.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":53079066214679,"sku":null,"price":410.0,"currency_code":"USD","in_stock":true},{"title":"12 pcs","offer_id":53079066247447,"sku":null,"price":800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s800a-high-speed-bolt-mounted-fuse.webp?v=1791799072"},{"product_id":"sinofuse-rs309-mf-s70a-rs309-mf-s-high-speed-fuse-700v-iec-750v-ul-70a-ar-size-3sa","title":"Sinofuse RS309-MF-S70A High-Speed Cylindrical Bolt-Mount Fuse, 70A, 700V AC\/DC IEC","description":"\u003cp\u003e\u003cstrong\u003eSinofuse RS309-MF-S70A\u003c\/strong\u003e is a cylindrical bolt-mount high-speed fuse rated at 70A with an aR utilization category. Its rated voltage is 700V AC\/DC under IEC and 750V DC under UL. The 3SA size uses M8 mounting bolts.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S70A\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;\"\u003e700V AC\/DC (IEC); 750V DC (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;\"\u003e100kA AC; 50kA DC (time constant ≤15 ms)\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;\"\u003ePre-arcing \/ clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e385 \/ 1,520 A²s; datasheet test values measured under DC conditions\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;\"\u003ePower 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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM8 bolts; recommended torque 12 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe RS309-MF-S series datasheet identifies EV drive power systems, power conversion systems, energy storage and power systems, frequency controllers, and chargers as typical applications.\u003c\/p\u003e\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement review for Sinofuse fuses. Match the model, electrical ratings, aR category, and mounting requirements to your equipment specifications before procurement.\u003c\/p\u003e\n\u003cp\u003eRequest a quote for Sinofuse RS309-MF-S70A with your required quantity and application details.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67738627146007,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67738627178775,"sku":null,"price":130.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67738627211543,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67738627244311,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s70a-high-speed-cylindrical-bolt-mount-fuse.webp?v=1791779794"},{"product_id":"sinofuse-rs309-mf-s90a-90a-high-speed-fuse","title":"SinoFuse RS309-MF-S90A High-Speed Cylindrical Bolt-Mount Fuse, 90A, 700V AC\/DC IEC","description":"\u003cp\u003e\u003cstrong\u003eSinoFuse RS309-MF-S90A\u003c\/strong\u003e is a cylindrical bolt-mount high-speed fuse with a 90A current rating and aR utilization category. Its rated voltage is 700V AC\/DC under IEC and 750V DC under UL.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S90A\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;\"\u003e90A\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;\"\u003e700V AC\/DC (IEC); 750V DC (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;\"\u003e100kA AC; 50kA DC (time constant ≤15 ms)\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;\"\u003ePre-arcing \/ clearing I²t\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e760 \/ 3,320 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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e23.5W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM8 bolts; recommended torque 12 ±1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe RS309-MF-S series datasheet identifies EV drive power systems, power conversion systems, energy storage and power systems, frequency controllers, and chargers as applications.\u003c\/p\u003e\n\u003cp\u003eApexon Supply supports B2B sourcing and replacement review. Confirm the exact model, electrical ratings, aR category, and mounting requirements against your equipment specifications before procurement.\u003c\/p\u003e\n\u003cp\u003eRequest a quote for SinoFuse RS309-MF-S90A with your required quantity and application details.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67738424312087,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67738424344855,"sku":null,"price":140.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67738424377623,"sku":null,"price":260.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67738424410391,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s90a-high-speed-cylindrical-bolt-mount-fuse.webp?v=1791773903"},{"product_id":"sinofuse-rs309-mf-s325a-325a-high-speed-fuse","title":"SinoFuse RS309-MF-S325A 325A High-Speed Cylindrical Fuse, 700V AC\/DC IEC, 750V DC UL, aR, Size 6TA","description":"\u003ch2\u003eSinoFuse RS309-MF-S325A High-Speed Fuse\u003c\/h2\u003e\n\n\u003cp\u003eThe SinoFuse RS309-MF-S325A is a 325A high-speed cylindrical fuse from the RS309-MF-S series, featuring bolted connections and an aR utilization category.\u003c\/p\u003e\n\n\u003cp\u003eRated for 700V AC\/DC under IEC specifications and 750V DC under UL specifications, this fuse is designed for high-speed protection in power conversion systems, electric vehicle power systems, energy storage equipment, and industrial electrical applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e325A rated current with aR utilization category\u003c\/li\u003e\n\u003cli\u003e700V AC\/DC rating according to IEC specifications\u003c\/li\u003e\n\u003cli\u003e750V DC rating according to UL specifications\u003c\/li\u003e\n\u003cli\u003eHigh breaking capacity: 100kA AC and 50kA DC\u003c\/li\u003e\n\u003cli\u003eSize 6TA cylindrical construction\u003c\/li\u003e\n\u003cli\u003eM10 bolted mounting connections\u003c\/li\u003e\n\u003cli\u003eLow pre-arcing I²t characteristics\u003c\/li\u003e\n\u003cli\u003eDesigned for applications requiring resistance to mechanical vibration and shock\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eSinoFuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eRS309-MF-S325A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eRS309-MF-S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Type\u003c\/td\u003e\n\u003ctd\u003eHigh-Speed Cylindrical Fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Current\u003c\/td\u003e\n\u003ctd\u003e325A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIEC Rated Voltage\u003c\/td\u003e\n\u003ctd\u003e700V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUL Rated Voltage\u003c\/td\u003e\n\u003ctd\u003e750V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUtilization Category\u003c\/td\u003e\n\u003ctd\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Breaking Capacity\u003c\/td\u003e\n\u003ctd\u003e100kA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Breaking Capacity\u003c\/td\u003e\n\u003ctd\u003e50kA (time constant ≤15ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePre-Arcing I²t\u003c\/td\u003e\n\u003ctd\u003e34,500 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Clearing I²t\u003c\/td\u003e\n\u003ctd\u003e74,500 A²s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e60W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize Code\u003c\/td\u003e\n\u003ctd\u003e6TA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eM10 Bolted Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Tightening Torque\u003c\/td\u003e\n\u003ctd\u003e21 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\n\u003cp\u003eThe RS309-MF-S series is designed for electrical protection applications including:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eElectric vehicle drive power systems\u003c\/li\u003e\n\u003cli\u003ePower conversion equipment\u003c\/li\u003e\n\u003cli\u003eEnergy storage and power systems\u003c\/li\u003e\n\u003cli\u003eVariable-frequency controllers\u003c\/li\u003e\n\u003cli\u003eBattery charging equipment\u003c\/li\u003e\n\u003cli\u003eIndustrial power electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation and Operating Conditions\u003c\/h3\u003e\n\n\u003cp\u003eThe manufacturer recommends that long-term continuous operating current should not exceed 80% of the rated current.\u003c\/p\u003e\n\n\u003cp\u003eNormal ambient operating temperature is -5°C to +40°C. Operation outside this range may require additional current-rating adjustments according to the manufacturer's specifications.\u003c\/p\u003e\n\n\u003cp\u003eThe fuse supports vertical, horizontal, or inclined installation, provided that reliable electrical connections and appropriate installation conditions are maintained.\u003c\/p\u003e\n\n\u003ch3\u003eStandards and Compliance\u003c\/h3\u003e\n\n\u003cp\u003eAccording to the manufacturer, the RS309-MF-S series conforms to IEC 60269 and UL 248 performance requirements. The manufacturer also states CE and UL certification and RoHS compliance for the series.\u003c\/p\u003e\n\n\u003cp\u003eFor equipment-specific applications, verify electrical ratings, installation dimensions, protection coordination, and applicable certification requirements against the manufacturer's technical documentation.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67738192183575,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67738192216343,"sku":null,"price":140.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67738192249111,"sku":null,"price":270.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67738192281879,"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-SSeries.webp?v=1791762885"},{"product_id":"sinofuse-rs309-mf-s80a-cylindrical-bolt-on-fuse","title":"SINOFUSE RS309-MF-S80A High-Speed Cylindrical Bolt-On Fuse, 80 A, 700 V AC\/DC (IEC) \/ 750 V DC (UL)","description":"\u003cp\u003eThe \u003cstrong\u003eSINOFUSE RS309-MF-S80A\u003c\/strong\u003e is an 80 A high-speed cylindrical bolt-on fuse in the RS309-MF-S series. It has an aR utilization category and size code 3SA. Mounting uses M8 bolts with a recommended tightening torque of 12 ± 1 N·m. Its voltage ratings are 700 V AC\/DC under IEC and 750 V DC under UL.\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;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eRS309-MF-S80A\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;\"\u003e80 A\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;\"\u003eIEC: 700 V AC\/DC; UL: 750 V DC\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: 100 kA; DC: 50 kA at a time constant ≤ 15 ms\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: 540 A²s; total clearing: 2,210 A²s. Datasheet test values were measured under DC conditions, with time constants and connections referenced to IEC 60269 \/ UL 248.\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;\"\u003ePower dissipation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e20 W\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;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eM8 bolts; recommended tightening torque 12 ± 1 N·m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTypical applications:\u003c\/strong\u003e Short-circuit protection in electric vehicle drive systems, power conversion equipment, energy storage systems, variable-frequency controllers, and chargers, subject to application-specific selection and protection coordination.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eB2B sourcing and replacement support:\u003c\/strong\u003e Submit the exact model and equipment requirements to Apexon Supply for a sourcing enquiry. Include the existing fuse label, mounting dimensions, circuit voltage, and protection requirements for replacement comparisons.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation:\u003c\/strong\u003e Send your RFQ for SINOFUSE RS309-MF-S80A with the required quantity, destination, and documentation requirements.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"1 pcs","offer_id":67741181116695,"sku":null,"price":50.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":67741181149463,"sku":null,"price":130.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":67741181182231,"sku":null,"price":240.0,"currency_code":"USD","in_stock":true},{"title":"10 pcs","offer_id":67741181214999,"sku":null,"price":400.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-rs309-mf-s80a-high-speed-cylindrical-bolt-on-fuse.webp?v=1791805338"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/collections\/SINOFUSE_RS309-MF-S_Series.webp?v=1791762072","url":"https:\/\/www.apexonsupply.com\/collections\/sinofuse-rs309-mf-s-high-speed-bolt-connected-fuse.oembed","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}