{"product_id":"littelfuse-jtd125-class-j-fuse-125a-600v-time-delay-fuse","title":"Littelfuse JTD125 Class J Fuse – 125A – 600V Time-Delay Fuse","description":"\u003cdiv data-voice-floating-orb-focus-background=\"\" class=\"relative basis-auto flex-col -mb-(--composer-overlap-px) pb-(--composer-overlap-px) [--composer-overlap-px:28px] grow flex\"\u003e\n\u003cdiv class=\"flex flex-col text-sm\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-16\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto 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-6a11c9d2-fa5c-83e8-934f-b46429aa1619-16\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-16\" data-testid=\"conversation-turn-388\" 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=\"7879d940-077f-42b3-9f2a-bde665571260\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" 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 wrap-break-word w-full dark markdown-new-styling\"\u003e\n\u003cp data-start=\"87\" data-end=\"587\"\u003eThe Littelfuse JTD125 is a 125 Amp Class J time-delay fuse designed to provide dependable overcurrent and short-circuit protection in industrial and commercial electrical systems. Part of the JTD series, this POWR-PRO® fuse features a time-delay characteristic that allows temporary inrush currents associated with motors, transformers, and other inductive loads to pass without nuisance opening. Its current-limiting design helps reduce fault energy and enhances protection for downstream equipment.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1judnlb\" data-start=\"594\" data-end=\"615\"\u003eElectrical Rating\u003c\/h3\u003e\n\u003cul data-start=\"616\" data-end=\"768\"\u003e\n\u003cli data-section-id=\"1v1zmn9\" data-start=\"616\" data-end=\"644\"\u003eCurrent Rating: 125 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1s2lsbc\" data-start=\"645\" data-end=\"676\"\u003eMaximum AC Voltage: 600 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"a8i5rv\" data-start=\"677\" data-end=\"708\"\u003eMaximum DC Voltage: 500 VDC\u003c\/li\u003e\n\u003cli data-section-id=\"1ynalz7\" data-start=\"709\" data-end=\"768\"\u003eInterrupting Rating:\n\u003cul data-start=\"734\" data-end=\"768\"\u003e\n\u003cli data-section-id=\"e5qboy\" data-start=\"734\" data-end=\"745\"\u003e200 kA AC\u003c\/li\u003e\n\u003cli data-section-id=\"9g1xnn\" data-start=\"748\" data-end=\"768\"\u003e20 kA DC @ 500 VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"775\" data-end=\"797\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"798\" data-end=\"1010\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"798\" data-end=\"826\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"16g6sum\" data-start=\"827\" data-end=\"853\"\u003eCatalog Number: JTD125\u003c\/li\u003e\n\u003cli data-section-id=\"8iil83\" data-start=\"854\" data-end=\"869\"\u003eSeries: JTD\u003c\/li\u003e\n\u003cli data-section-id=\"1uncs7x\" data-start=\"870\" data-end=\"893\"\u003eFuse Class: Class J\u003c\/li\u003e\n\u003cli data-section-id=\"soa6gr\" data-start=\"894\" data-end=\"928\"\u003eConstruction Type: Knife-Blade\u003c\/li\u003e\n\u003cli data-section-id=\"1383xbz\" data-start=\"929\" data-end=\"964\"\u003eFuse Type: Time-Delay (Slo-Blo)\u003c\/li\u003e\n\u003cli data-section-id=\"1gst2xh\" data-start=\"965\" data-end=\"991\"\u003eFamily: POWR-PRO® Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"q4hlgv\" data-start=\"992\" data-end=\"1010\"\u003eIndicating: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"krhh0r\" data-start=\"1017\" data-end=\"1047\"\u003eProtection Characteristics\u003c\/h3\u003e\n\u003cul data-start=\"1048\" data-end=\"1395\"\u003e\n\u003cli data-section-id=\"fbycc0\" data-start=\"1048\" data-end=\"1137\"\u003eTime-delay design accommodates temporary motor starting and transformer inrush currents\u003c\/li\u003e\n\u003cli data-section-id=\"126uvmk\" data-start=\"1138\" data-end=\"1195\"\u003eProvides reliable overload and short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"nf01j6\" data-start=\"1196\" data-end=\"1259\"\u003eReduces nuisance fuse openings in inductive load applications\u003c\/li\u003e\n\u003cli data-section-id=\"5cgjd\" data-start=\"1260\" data-end=\"1333\"\u003eCurrent-limiting performance minimizes let-through energy during faults\u003c\/li\u003e\n\u003cli data-section-id=\"iz0jvc\" data-start=\"1334\" data-end=\"1395\"\u003eHigh interrupting capacity for demanding industrial systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"xldzoc\" data-start=\"1402\" data-end=\"1427\"\u003eConstruction Features\u003c\/h3\u003e\n\u003cul data-start=\"1428\" data-end=\"1662\"\u003e\n\u003cli data-section-id=\"pfwu8s\" data-start=\"1428\" data-end=\"1457\"\u003eCompact Class J fuse design\u003c\/li\u003e\n\u003cli data-section-id=\"ztaful\" data-start=\"1458\" data-end=\"1493\"\u003eKnife-blade terminal construction\u003c\/li\u003e\n\u003cli data-section-id=\"ar03hf\" data-start=\"1494\" data-end=\"1529\"\u003eNon-indicating fuse configuration\u003c\/li\u003e\n\u003cli data-section-id=\"10nbaok\" data-start=\"1530\" data-end=\"1598\"\u003eIndustrial-grade construction for dependable long-term performance\u003c\/li\u003e\n\u003cli data-section-id=\"1fa7653\" data-start=\"1599\" data-end=\"1662\"\u003eDesigned for high-performance power distribution applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1dp59sz\" data-start=\"1669\" data-end=\"1697\"\u003eMounting \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul data-start=\"1698\" data-end=\"1903\"\u003e\n\u003cli data-section-id=\"2fob23\" data-start=\"1698\" data-end=\"1736\"\u003eMounting Method: Fuse Block \/ Holder\u003c\/li\u003e\n\u003cli data-section-id=\"1733adl\" data-start=\"1737\" data-end=\"1800\"\u003eCompatible with standard Class J fuse holders and fuse blocks\u003c\/li\u003e\n\u003cli data-section-id=\"1dm22pu\" data-start=\"1801\" data-end=\"1903\"\u003eSuitable for switchboards, panelboards, motor control centers, and industrial distribution equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"1910\" data-end=\"1926\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"1927\" data-end=\"2159\"\u003e\n\u003cli data-section-id=\"11izu5f\" data-start=\"1927\" data-end=\"1943\"\u003eMotor circuits\u003c\/li\u003e\n\u003cli data-section-id=\"160yndo\" data-start=\"1944\" data-end=\"1983\"\u003eIndustrial power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"cvodt3\" data-start=\"1984\" data-end=\"2014\"\u003eSwitchboards and panelboards\u003c\/li\u003e\n\u003cli data-section-id=\"r22ycc\" data-start=\"2015\" data-end=\"2038\"\u003eMotor control centers\u003c\/li\u003e\n\u003cli data-section-id=\"1rscvgl\" data-start=\"2039\" data-end=\"2073\"\u003eTransformers and inductive loads\u003c\/li\u003e\n\u003cli data-section-id=\"1p8t4ya\" data-start=\"2074\" data-end=\"2112\"\u003eBranch and feeder circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"1bxx2ao\" data-start=\"2113\" data-end=\"2159\"\u003eCommercial and industrial electrical systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"2166\" data-end=\"2182\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"2183\" data-end=\"2339\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"2183\" data-end=\"2211\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"16g6sum\" data-start=\"2212\" data-end=\"2238\"\u003eCatalog Number: JTD125\u003c\/li\u003e\n\u003cli data-section-id=\"6027wp\" data-start=\"2239\" data-end=\"2272\"\u003eProduct Type: Time-Delay Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"8iil83\" data-start=\"2273\" data-end=\"2288\"\u003eSeries: JTD\u003c\/li\u003e\n\u003cli data-section-id=\"1uncs7x\" data-start=\"2289\" data-end=\"2312\"\u003eFuse Class: Class J\u003c\/li\u003e\n\u003cli data-section-id=\"1gst2xh\" data-start=\"2313\" data-end=\"2339\"\u003eFamily: POWR-PRO® Fuse\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Littelfuse","offers":[{"title":"NEW","offer_id":48476863135993,"sku":"JTD125","price":92.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/1280_gmW6VTd7xDk07wNh_5b212540-bab4-4c92-a8ac-def0484c689a.jpg?v=1780411791","url":"https:\/\/mycircuitbreakers.com\/products\/littelfuse-jtd125-class-j-fuse-125a-600v-time-delay-fuse","provider":"My Circuit Breakers","version":"1.0","type":"link"}