{"product_id":"eaton-bussmann-fwj-250a-250a-high-speed-cylindrical-fuse-class-ar-1000vac-800vdc-stud-mount","title":"Eaton Bussmann FWJ-250A 250A High Speed Cylindrical Fuse – Class aR – 1000VAC \/ 800VDC – Stud Mount","description":"\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-69f38d39-f654-83e8-b941-44eeb6cb23a1-37\" data-testid=\"conversation-turn-142\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"631a4b54-790e-4923-a070-7d823e26ce22\" dir=\"auto\" data-message-model-slug=\"gpt-5-3-mini\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full wrap-break-word dark markdown-new-styling\"\u003e\n\u003cp data-start=\"158\" data-end=\"599\"\u003eThe Eaton Bussmann FWJ-250A is a high-speed cylindrical fuse engineered for semiconductor protection in demanding industrial power systems. Rated at 250A, it provides ultra-fast fault interruption to protect sensitive equipment such as DC drives, rectifiers, and power converters. Its stud-mounted cylindrical center-bolted design ensures secure installation and reliable operation in high-power AC\/DC applications.\u003c\/p\u003e\n\u003cp data-start=\"606\" data-end=\"628\"\u003e\u003cstrong data-start=\"606\" data-end=\"628\"\u003eVoltage and Rating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"630\" data-end=\"796\"\u003e\n\u003cli data-section-id=\"17netm5\" data-start=\"630\" data-end=\"654\"\u003eCurrent Rating: 250A\u003c\/li\u003e\n\u003cli data-section-id=\"brnmeb\" data-start=\"655\" data-end=\"691\"\u003eVoltage Rating: 1000VAC \/ 800VDC\u003c\/li\u003e\n\u003cli data-section-id=\"dm32px\" data-start=\"692\" data-end=\"721\"\u003eBreaking Capacity: 100 kA\u003c\/li\u003e\n\u003cli data-section-id=\"9kn5eb\" data-start=\"722\" data-end=\"760\"\u003eInterrupt Rating: 100 kAIC @ 1000V\u003c\/li\u003e\n\u003cli data-section-id=\"nx5b9\" data-start=\"761\" data-end=\"796\"\u003eRated Switching Capacity: 100 A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"803\" data-end=\"825\"\u003e\u003cstrong data-start=\"803\" data-end=\"825\"\u003eKey Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"827\" data-end=\"1276\"\u003e\n\u003cli data-section-id=\"1y8y66g\" data-start=\"827\" data-end=\"859\"\u003eManufacturer: Eaton Bussmann\u003c\/li\u003e\n\u003cli data-section-id=\"chjf5x\" data-start=\"860\" data-end=\"888\"\u003eCatalog Number: FWJ-250A\u003c\/li\u003e\n\u003cli data-section-id=\"16k5zd9\" data-start=\"889\" data-end=\"917\"\u003eGlobal Catalog: FWJ-250A\u003c\/li\u003e\n\u003cli data-section-id=\"l5upt6\" data-start=\"918\" data-end=\"963\"\u003eProduct Type: High Speed Cylindrical Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"9foj2e\" data-start=\"964\" data-end=\"983\"\u003eClass: Class aR\u003c\/li\u003e\n\u003cli data-section-id=\"hwipx1\" data-start=\"984\" data-end=\"1039\"\u003eUtilization Category: aR (Semiconductor Protection)\u003c\/li\u003e\n\u003cli data-section-id=\"1jrpg0e\" data-start=\"1040\" data-end=\"1063\"\u003eCurrent Type: AC\/DC\u003c\/li\u003e\n\u003cli data-section-id=\"10mfdjj\" data-start=\"1064\" data-end=\"1098\"\u003eFuse Indicator: Non-Indicating\u003c\/li\u003e\n\u003cli data-section-id=\"he2kpo\" data-start=\"1099\" data-end=\"1130\"\u003eMounting Method: Stud Mount\u003c\/li\u003e\n\u003cli data-section-id=\"1b9qkbx\" data-start=\"1131\" data-end=\"1178\"\u003eFuse Shape: Cylindrical, Center Bolted Tags\u003c\/li\u003e\n\u003cli data-section-id=\"hw7sgv\" data-start=\"1179\" data-end=\"1276\"\u003eApplication: Semiconductor Protection, DC Common Bus, DC Drives, Power Converters, Rectifiers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1283\" data-end=\"1311\"\u003e\u003cstrong data-start=\"1283\" data-end=\"1311\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1313\" data-end=\"1556\"\u003e\n\u003cli data-section-id=\"1ojkx5i\" data-start=\"1313\" data-end=\"1337\"\u003ePre-Arc (I²T): 16000\u003c\/li\u003e\n\u003cli data-section-id=\"xob8on\" data-start=\"1338\" data-end=\"1372\"\u003eClearing (I²T): 112000 @ 1000V\u003c\/li\u003e\n\u003cli data-section-id=\"scimhw\" data-start=\"1373\" data-end=\"1394\"\u003eWatt Losses: 50 W\u003c\/li\u003e\n\u003cli data-section-id=\"wk38eg\" data-start=\"1395\" data-end=\"1434\"\u003eCenter-to-Center Distance: 113.8 mm\u003c\/li\u003e\n\u003cli data-section-id=\"517zjd\" data-start=\"1435\" data-end=\"1463\"\u003eConstruction Size: Other\u003c\/li\u003e\n\u003cli data-section-id=\"5hq5nn\" data-start=\"1464\" data-end=\"1508\"\u003eInsulated Metal Gripping Lugs (IMGL): No\u003c\/li\u003e\n\u003cli data-section-id=\"5yd2v3\" data-start=\"1509\" data-end=\"1529\"\u003eFuse Type: FWJ-A\u003c\/li\u003e\n\u003cli data-section-id=\"fu5an2\" data-start=\"1530\" data-end=\"1556\"\u003eIEC Fuse System: Other\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1563\" data-end=\"1583\"\u003e\u003cstrong data-start=\"1563\" data-end=\"1583\"\u003ePhysical Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1585\" data-end=\"1694\"\u003e\n\u003cli data-section-id=\"y92t5e\" data-start=\"1585\" data-end=\"1617\"\u003eProduct Length\/Depth: 147 mm\u003c\/li\u003e\n\u003cli data-section-id=\"189jkmd\" data-start=\"1618\" data-end=\"1643\"\u003eProduct Height: 51 mm\u003c\/li\u003e\n\u003cli data-section-id=\"18mk2gs\" data-start=\"1644\" data-end=\"1668\"\u003eProduct Width: 51 mm\u003c\/li\u003e\n\u003cli data-section-id=\"14wlorz\" data-start=\"1669\" data-end=\"1694\"\u003eProduct Weight: 521 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1701\" data-end=\"1717\"\u003e\u003cstrong data-start=\"1701\" data-end=\"1717\"\u003eProduct Data\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1719\" data-end=\"1945\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"1y8y66g\" data-start=\"1719\" data-end=\"1751\"\u003eManufacturer: Eaton Bussmann\u003c\/li\u003e\n\u003cli data-section-id=\"15fsdff\" data-start=\"1752\" data-end=\"1773\"\u003eUPC: 051712796231\u003c\/li\u003e\n\u003cli data-section-id=\"7dr1rb\" data-start=\"1774\" data-end=\"1796\"\u003eEAN: 5027590021241\u003c\/li\u003e\n\u003cli data-section-id=\"t3ek62\" data-start=\"1797\" data-end=\"1827\"\u003eCategory: High Speed Fuses\u003c\/li\u003e\n\u003cli data-section-id=\"s1scal\" data-start=\"1828\" data-end=\"1876\"\u003eCertifications: UL Recognized, CSA Certified\u003c\/li\u003e\n\u003cli data-section-id=\"1qcitnj\" data-start=\"1877\" data-end=\"1918\"\u003eCompliance: CE Marked, RoHS Compliant\u003c\/li\u003e\n\u003cli data-section-id=\"1lc1dzt\" data-start=\"1919\" data-end=\"1945\" data-is-last-node=\"\"\u003eWarranty: Not Applicable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"z-0 flex min-h-[46px] justify-start\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\n\u003cdiv class=\"text-center\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"Eaton Bussmann","offers":[{"title":"NEW","offer_id":48344415928569,"sku":"FWJ-250A","price":302.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/GHJ.jpg?v=1777724556","url":"https:\/\/mycircuitbreakers.com\/products\/eaton-bussmann-fwj-250a-250a-high-speed-cylindrical-fuse-class-ar-1000vac-800vdc-stud-mount","provider":"My Circuit Breakers","version":"1.0","type":"link"}