{"product_id":"sinofuse-rs308-hb-3h-fast-acting-fuse-100-250a-ac250v-dc170v","title":"SINOFUSE RS308-HB-3H High-Speed Semiconductor Fuse Series, 100-250A, AC250V\/DC170V","description":"\u003cp\u003eSINOFUSE RS308-HB-3H is the 3H size group within the RS308-HB cylindrical bolt-connected fast-acting fuse family. The verified 3H range includes five current ratings from 100 A to 250 A, all rated AC 250 V\/DC 170 V and classified for aR partial-range protection. Shared breaking capacity is AC 250 V at 80 kA and DC 170 V at 50 kA with a 10 ms time constant. The 3H format uses M8 installation bolts with a recommended tightening torque of 12 Nm ±1 Nm. This page separates common specifications from model-specific I²t and power-loss data so procurement teams can identify the required rating and verify the complete order number before RFQ or replacement review.\u003c\/p\u003e\n\n\u003ch2\u003eRS308-HB-3H Series Overview\u003c\/h2\u003e\n\u003cp\u003eThe RS308-HB-3H series is a cylindrical, bolt-connected high-speed fuse configuration intended for partial-range short-circuit and backup protection. SINOFUSE describes the RS308-HB family as having strong current-limiting capability, high breaking capacity and rapid short-circuit interruption. The 3H characteristic data specifies a minimum breaking current of 4 In. The manufacturer also recommends that long-term continuous current not exceed 0.8 times the fuse rated current. Performance references listed for the RS308-HB family include IEC 60269-4 and UL 248-13. The manufacturer document specifically identifies CCC and UL certification for 2G\/2G-HT variants, so no such certification claim is made here for the 3H models.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 16px; font-family: sans-serif;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003eCommon Series Value\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eProduct type\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eCylindrical bolt-connected high-speed fuse for partial-range protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eUtilization category\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eaR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRated voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eAC 250 V \/ DC 170 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRated current range\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e100-250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRated breaking capacity\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eAC 250 V at 80 kA; DC 170 V at 50 kA, 10 ms time constant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eInstallation\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eM8 installation bolts; recommended torque 12 Nm ±1 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eMinimum breaking current\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e4 In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eUnit weight\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e73.7 ±3 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical data reference:\u003c\/strong\u003e SINOFUSE “RS308-HB AC250V\/DC170V Cylindrical Bolt-Connected Fast-Acting Fuse Selection Specification,” document ZR\/YC-0009 A5.\u003c\/p\u003e\n\n\u003ch2\u003eRS308-HB-3H Model Selection\u003c\/h2\u003e\n\u003cp\u003eThe verified 3H selection range contains 100 A, 125 A, 160 A, 200 A and 250 A ratings. Select the required model first by rated current, then compare the associated pre-arcing I²t, fusing I²t and power-loss values with the protected circuit and thermal requirements. All five models share the same 3H family format, AC\/DC voltage rating and aR utilization category. Confirm the complete MPN and the equipment electrical and mechanical requirements before ordering or using a replacement.\u003c\/p\u003e\n\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 13px; margin-top: 16px; font-family: sans-serif;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003eExact MPN\u003c\/th\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003eRated Current\u003c\/th\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003ePre-Arcing I²t\u003c\/th\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003eFusing I²t\u003c\/th\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003ePower Loss at 0.5 In\u003c\/th\u003e\n\u003cth style=\"padding: 8px 10px; background-color: #f2f2f2; font-weight: bold; color: #333; text-align: left; vertical-align: top;\"\u003ePower Loss at In\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRS308-HB-3H100A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e100 A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e791 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e5,217 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e2.7 W\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e11.0 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRS308-HB-3H125A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e125 A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e1,237 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e8,151 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e3.4 W\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e13.8 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRS308-HB-3H160A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e160 A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e2,199 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e14,492 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e4.3 W\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e17.2 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRS308-HB-3H200A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e200 A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e4,158 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e27,399 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e4.9 W\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e19.9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003eRS308-HB-3H250A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e250 A\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e7,028 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e46,305 A²s\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e6.2 W\u003c\/td\u003e\n\u003ctd style=\"padding: 8px 10px; color: #555; line-height: 1.5; vertical-align: top; border-bottom: 1px solid #e0e0e0;\"\u003e24.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe listed I²t values are manufacturer typical data measured under the specified standard test environment at AC 277 V with power factor 0.2. The datasheet states that its test data are measured under AC conditions, with test parameters and connections according to IEC 60269 requirements.\u003c\/p\u003e\n\n\u003ch2\u003eVerified Applications\u003c\/h2\u003e\n\u003cp\u003eManufacturer-listed applications include variable-frequency drives, rectifiers, inverters, various power supplies and other semiconductor equipment, as well as batteries, motors and capacitors. The stated protection function is short-circuit and backup protection.\u003c\/p\u003e\n\n\u003ch2\u003eB2B Sourcing and Replacement Support\u003c\/h2\u003e\n\u003cp\u003eApexon Supply provides B2B sourcing support for the SINOFUSE RS308-HB-3H series as an independent industrial sourcing supplier. For replacement projects, confirm rated current, AC\/DC voltage, aR utilization category, 3H mechanical format, M8 installation requirements and the complete MPN against the protected equipment before purchase.\u003c\/p\u003e\n\u003cp\u003eSubmit the complete MPN, selected current rating, quantity and application requirements for RFQ review. Contact Apexon Supply for sourcing options and technical alignment; most qualified RFQs receive a response or quote within 12 hours.\u003c\/p\u003e","brand":"Sinofuse","offers":[{"title":"RS308-HB-3H100A","offer_id":55106718597399,"sku":null,"price":15.0,"currency_code":"USD","in_stock":true},{"title":"RS308-HB-3H125A","offer_id":55106718630167,"sku":null,"price":15.0,"currency_code":"USD","in_stock":true},{"title":"RS308-HB-3H160A","offer_id":55106718662935,"sku":null,"price":15.0,"currency_code":"USD","in_stock":true},{"title":"RS308-HB-3H200A","offer_id":55106718695703,"sku":null,"price":20.0,"currency_code":"USD","in_stock":true},{"title":"RS308-HB-3H250A","offer_id":55106718728471,"sku":null,"price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/9210\/1655\/files\/SinofuseRS308-HB-3HFast-ActingFuse-100-250AAC250V_DC170V-ProductImage.webp?v=1788398990","url":"https:\/\/www.apexonsupply.com\/products\/sinofuse-rs308-hb-3h-fast-acting-fuse-100-250a-ac250v-dc170v","provider":"Apexon Solutions LLC","version":"1.0","type":"link"}