{"product_id":"sinofuse-rsz307-01-j4p-500a-750v-fuses-3-pieces","title":"Sinofuse RSZ307-01-J4P High-Speed Fuse, 500A 750V DC, aR Protection for EV \u0026 Energy Storage - Pack of 3","description":"\u003cp\u003eThe Sinofuse RSZ307-01-J4P is a high-performance, square-body DC fast-acting fuse designed specifically for the rigorous demands of Electric Vehicle (EV) power systems and Battery Energy Storage Systems (BESS). Engineered by Xi'an Sinofuse Electric Co., Ltd., this fuse features a compact design with low temperature rise and high breaking capacity, providing reliable circuit protection for power batteries, drive systems, and power distribution units (PDU).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialized DC Protection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRated at 750V DC, optimized for intermediate voltage battery strings and heavy-duty industrial DC architectures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Interruption:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtilizing an \"aR\" (Partial range) utilization category to ensure ultra-fast response times, effectively limiting I²t energy to protect sensitive power semiconductors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermally Optimized Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEngineered for low power dissipation (74W at rated current) to minimize heat accumulation within enclosed power modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration \u0026amp; Shock Resistance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifically designed to meet GB\/T 31465 standards for automotive safety and reliability, ensuring durability in high-vibration environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual Fault Indication:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a built-in visual indicator for rapid troubleshooting and maintenance efficiency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eXi'an Sinofuse Electric Co., Ltd.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRSZ307-01-J4P-500A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Current:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e500 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e750V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUtilization Category:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eaR (IEC \/ Semiconductor Protection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreaking Capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e≥ 50kA (L\/R = 5~10ms)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sinofuse","offers":[{"title":"Default Title","offer_id":48243563233559,"sku":null,"price":160.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/sinofuse-sinofuse-rsz307-01-j4p-500a-750v-fuses-3-pieces-1212527269.jpg?v=1766428442","url":"https:\/\/www.apexonsupply.com\/products\/sinofuse-rsz307-01-j4p-500a-750v-fuses-3-pieces","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}