{"product_id":"sinofuse-rs309-mf-s800a-750v-fuses-3-pieces","title":"SINOFUSE RS309-MF-S800A RS309-MF-S Cylindrical Bolt-On Fast-Acting Fuse, 750V DC (UL) \/ 700V AC\/DC (IEC), 800A, Size 7TA - Pack of 3","description":"\u003cdiv\u003e\n  \u003ch2\u003eOverview\u003c\/h2\u003e\n  \u003cp\u003eThe SINOFUSE RS309-MF-S800A is a cylindrical, bolt-on, fast-acting aR fuse engineered for high-performance DC and AC protection in EV traction, energy storage, and power conversion systems. It delivers a compact form factor, low I²t, and high interrupting capacity with strong resistance to vibration and harsh environments. Sold as a pack of 3.\u003c\/p\u003e\n\n  \u003ch3\u003eKey Features\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eaR fast-acting characteristic with low pre-arcing I²t for semiconductor protection\u003c\/li\u003e\n    \u003cli\u003eHigh interrupting capacity: AC 100 kA, DC 50 kA (time constant ≤15 ms)\u003c\/li\u003e\n    \u003cli\u003eRated voltage: AC\/DC 700 V (IEC), DC 750 V (UL)\u003c\/li\u003e\n    \u003cli\u003eRobust against vibration, mechanical shock, and wide temperature ranges\u003c\/li\u003e\n    \u003cli\u003eStandards: UL248, IEC60269; safety and application reliability per ISO8820, GB\/T 31465\u003c\/li\u003e\n    \u003cli\u003eCertifications: UL, CE; RoHS compliant\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eApplications\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eElectric vehicle drive\/traction power systems\u003c\/li\u003e\n    \u003cli\u003ePower conversion systems and inverters\u003c\/li\u003e\n    \u003cli\u003eEnergy storage and battery systems\u003c\/li\u003e\n    \u003cli\u003eVariable frequency controllers and chargers\u003c\/li\u003e\n    \u003cli\u003eConductors and other on-board equipment short-circuit\/back-up protection\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSpecifications\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-top: 10px;\"\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eSINOFUSE\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eSeries\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eRS309-MF-S\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eSpecific MPN\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eRS309-MF-S800A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eUtilization Category\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eaR (fast-acting, semiconductor protection)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eRated Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eAC\/DC 700 V (IEC); DC 750 V (UL)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eRated Current\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003e800 A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eBreaking Capacity\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eAC 100 kA; DC 50 kA (time constant ≤15 ms)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003ePre-arcing I²t (A²s)\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003e124,000\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eMelting I²t (A²s)\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003e428,000\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003ePower Loss\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003e140 W (at rated current)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eSize Code\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003e7TA\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eMounting\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eBolt-on, M10 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: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eStandards Compliance\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eUL248, IEC60269; safety and application reliability per ISO8820, GB\/T 31465\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eCertifications\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eUL, CE; RoHS compliant\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eOperating Temperature (ambient)\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eNormal: -5°C to +40°C; Allowed: -40°C to +120°C (derating may apply above 40°C)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eAltitude\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eNormal ≤2000 m; allowed ≤4500 m (consider current derating in enclosed installations)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eHumidity\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eAt 40°C ≤50% RH; at 20°C up to 90% RH; allowed up to 95% RH without noticeable condensation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eVibration\/Shock\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eMeets GB2423.10-2008 4.1.2.6, QC\/T 413-2002; suitable for road vehicles; rail transit Class II environment\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003ePollution Degree\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003eClass III\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003eRecommended Continuous Current\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003e≤80% of rated current\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n      \u003ctd style=\"padding: 6px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333;\"\u003ePack Size\u003c\/td\u003e\n      \u003ctd style=\"padding: 6px 10px; color: #555;\"\u003e3 pieces\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Sinofuse","offers":[{"title":"Default Title","offer_id":48171630493975,"sku":null,"price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-sinofuse-rs309-mf-s-800a-750v-fuses-3-pieces-1212527564.jpg?v=1766671297","url":"https:\/\/www.apexonsupply.com\/products\/sinofuse-rs309-mf-s800a-750v-fuses-3-pieces","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}