{"product_id":"mersen-d70qs300-4-d70qs-series-high-speed-dc-fuse-700vdc-300a-ar-20ka-ir-4-34in-round-body","title":"Mersen D70QS300-4 High-Speed DC Semiconductor Fuse, 700VDC, 300A","description":"\u003cp\u003e\u003cstrong\u003eMersen D70QS300-4\u003c\/strong\u003e is a D70QS Series aR high-speed DC semiconductor fuse rated for 700VDC and 300A. This round-body fuse is used for DC circuit protection in high-power conversion and energy systems where verified fuse rating, interrupting performance, and body dimensions must be reviewed before replacement sourcing.\u003c\/p\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 20px; font-family: sans-serif;\"\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eProduct ID \/ MPN\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eD70QS300-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eBrand \/ Series \/ Category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eMersen D70QS Series aR high-speed DC semiconductor fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMain Electrical or Technical Ratings\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e700VDC, 300A, L\/R ≤1ms, 20kA interrupting capacity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\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;\"\u003e8.8W at 0.5 In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMinimum Breaking Capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e1580A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMaximum Time to Clear MBC\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e140ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eMechanical Specs\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eA 4.34 in \/ 110 mm; B 1.50 in \/ 38.1 mm; C 2.09 in \/ 53.1 mm; D 3.41 in \/ 86.6 mm; E 2.78 in \/ 70.6 mm; F 0.41 in \/ 10.4 mm; G 1.00 in \/ 25.4 mm; H 0.25 in \/ 6.4 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003e0.26 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom: 1px solid #e0e0e0;\"\u003e\n\u003ctd style=\"padding: 8px 10px; background-color: #f9f9f9; font-weight: bold; width: 35%; color: #333; line-height: 1.5; vertical-align: top;\"\u003eStandards \/ Certifications\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top;\"\u003eUL Recognized, UL File E60314; REACH \/ RoHS compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eTypical applications include battery management and charging system protection, energy storage systems, electric energy storage, battery disconnect units, battery pack protection, DC fast-charging stations, backup protection for DC relays and disconnects, and inverter or variable speed drive protection at 700VDC or below.\u003c\/p\u003e\n\u003cp\u003eApexon Supply supports B2B replacement sourcing and technical alignment for the Mersen D70QS300-4 high-speed DC semiconductor fuse. Buyers should verify current rating, voltage rating, interrupting capacity, fuse body size, mounting dimensions, and application requirements before replacement.\u003c\/p\u003e\n\u003cp\u003eSend the MPN, required quantity, and application requirements for RFQ support. Most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Ferraz Shawmut","offers":[{"title":"1 pcs","offer_id":53430214852887,"sku":null,"price":90.0,"currency_code":"USD","in_stock":true},{"title":"3 pcs","offer_id":53430214885655,"sku":null,"price":250.0,"currency_code":"USD","in_stock":true},{"title":"6 pcs","offer_id":53430214918423,"sku":null,"price":480.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/ferraz-shawmut-general-industrial-fuses-mersen-d70qs300-4-d70qs-series-high-speed-dc-fuse-700vdc-300a-ar-20ka-ir-4-34in-round-body-pack-of-5-1214617160.png?v=1767700450","url":"https:\/\/www.apexonsupply.com\/products\/mersen-d70qs300-4-d70qs-series-high-speed-dc-fuse-700vdc-300a-ar-20ka-ir-4-34in-round-body","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}