{"product_id":"littelfuse-jlln600-class-t-fuse-600a-300v-fast-acting-current-limiting-fuse","title":"Littelfuse JLLN600 Class T Fuse – 600A – 300V Fast-Acting Current-Limiting Fuse","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-4\" 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-b46429aa1619-4\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-4\" data-testid=\"conversation-turn-364\" 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=\"b3b4a72d-0bd0-427d-a104-203b8bbdc72c\" 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=\"106\" data-end=\"632\"\u003eThe Littelfuse JLLN600 is a 600 Amp Class T fast-acting fuse designed for high-performance protection in industrial and commercial electrical distribution systems. Part of the JLLN series, this current-limiting fuse provides rapid fault interruption to minimize equipment damage and reduce let-through energy during short-circuit conditions. Its compact knife-blade\/bolt-in construction makes it ideal for applications requiring high interrupting capacity, reliable protection, and efficient utilization of installation space.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1judnlb\" data-start=\"639\" data-end=\"660\"\u003eElectrical Rating\u003c\/h3\u003e\n\u003cul data-start=\"661\" data-end=\"819\"\u003e\n\u003cli data-section-id=\"1ojqtut\" data-start=\"661\" data-end=\"689\"\u003eCurrent Rating: 600 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1r9g6xp\" data-start=\"690\" data-end=\"721\"\u003eMaximum AC Voltage: 300 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1bhmmrc\" data-start=\"722\" data-end=\"753\"\u003eMaximum DC Voltage: 125 VDC\u003c\/li\u003e\n\u003cli data-section-id=\"1hyb0lc\" data-start=\"754\" data-end=\"819\"\u003eInterrupting Rating:\n\u003cul data-start=\"781\" data-end=\"819\"\u003e\n\u003cli data-section-id=\"5nvs4y\" data-start=\"781\" data-end=\"794\"\u003e200 kA AC\u003c\/li\u003e\n\u003cli data-section-id=\"oebnhc\" data-start=\"797\" data-end=\"819\"\u003e20 kA DC @ 125 VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"826\" data-end=\"848\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"849\" data-end=\"1054\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"849\" data-end=\"877\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"1l1rbrk\" data-start=\"878\" data-end=\"905\"\u003eCatalog Number: JLLN600\u003c\/li\u003e\n\u003cli data-section-id=\"1vptq8d\" data-start=\"906\" data-end=\"922\"\u003eSeries: JLLN\u003c\/li\u003e\n\u003cli data-section-id=\"1unc6df\" data-start=\"923\" data-end=\"946\"\u003eFuse Class: Class T\u003c\/li\u003e\n\u003cli data-section-id=\"10wxn8r\" data-start=\"947\" data-end=\"991\"\u003eConstruction Type: Knife-Blade \/ Bolt-In\u003c\/li\u003e\n\u003cli data-section-id=\"12nf2bp\" data-start=\"992\" data-end=\"1035\"\u003eFuse Type: Fast-Acting Current-Limiting\u003c\/li\u003e\n\u003cli data-section-id=\"q4hlgv\" data-start=\"1036\" data-end=\"1054\"\u003eIndicating: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"krhh0r\" data-start=\"1061\" data-end=\"1091\"\u003eProtection Characteristics\u003c\/h3\u003e\n\u003cul data-start=\"1092\" data-end=\"1425\"\u003e\n\u003cli data-section-id=\"1a3lwdy\" data-start=\"1092\" data-end=\"1146\"\u003eFast-acting operation for rapid fault interruption\u003c\/li\u003e\n\u003cli data-section-id=\"1hbvn5l\" data-start=\"1147\" data-end=\"1218\"\u003eCurrent-limiting design minimizes fault energy and equipment stress\u003c\/li\u003e\n\u003cli data-section-id=\"hxzu42\" data-start=\"1219\" data-end=\"1265\"\u003eProvides superior short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"vgaczr\" data-start=\"1266\" data-end=\"1335\"\u003eHigh interrupting capacity for demanding industrial power systems\u003c\/li\u003e\n\u003cli data-section-id=\"1b99hf9\" data-start=\"1336\" data-end=\"1425\"\u003eHelps protect sensitive electrical and electronic equipment from fault-related damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"xldzoc\" data-start=\"1432\" data-end=\"1457\"\u003eConstruction Features\u003c\/h3\u003e\n\u003cul data-start=\"1458\" data-end=\"1639\"\u003e\n\u003cli data-section-id=\"1ywu2gy\" data-start=\"1458\" data-end=\"1489\"\u003eCompact Class T fuse design\u003c\/li\u003e\n\u003cli data-section-id=\"166gte5\" data-start=\"1490\" data-end=\"1535\"\u003eKnife-blade\/bolt-in terminal construction\u003c\/li\u003e\n\u003cli data-section-id=\"1lrgeqr\" data-start=\"1536\" data-end=\"1573\"\u003eNon-indicating fuse configuration\u003c\/li\u003e\n\u003cli data-section-id=\"1reydx8\" data-start=\"1574\" data-end=\"1639\"\u003eIndustrial-duty construction for reliable long-term operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1dp59sz\" data-start=\"1646\" data-end=\"1674\"\u003eMounting \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul data-start=\"1675\" data-end=\"1903\"\u003e\n\u003cli data-section-id=\"scj4g6\" data-start=\"1675\" data-end=\"1734\"\u003eMounting Method: Fuse Block \/ Holder \/ Bolt-In Mounting\u003c\/li\u003e\n\u003cli data-section-id=\"1clzk5o\" data-start=\"1735\" data-end=\"1791\"\u003eCompatible with Class T fuse blocks and fuse holders\u003c\/li\u003e\n\u003cli data-section-id=\"fz17dt\" data-start=\"1792\" data-end=\"1903\"\u003eSuitable for switchboards, panelboards, UPS systems, battery systems, 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=\"2184\"\u003e\n\u003cli data-section-id=\"n7lx3w\" data-start=\"1927\" data-end=\"1968\"\u003eIndustrial power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"z4icg\" data-start=\"1969\" data-end=\"2003\"\u003eUPS and battery backup systems\u003c\/li\u003e\n\u003cli data-section-id=\"x5ewh3\" data-start=\"2004\" data-end=\"2036\"\u003eSwitchboards and panelboards\u003c\/li\u003e\n\u003cli data-section-id=\"1n6q63g\" data-start=\"2037\" data-end=\"2062\"\u003eMotor control centers\u003c\/li\u003e\n\u003cli data-section-id=\"11fbwcj\" data-start=\"2063\" data-end=\"2120\"\u003eCurrent-limiting feeder and branch circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"iray4j\" data-start=\"2121\" data-end=\"2184\"\u003eProtection of sensitive electrical and electronic equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"2191\" data-end=\"2207\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"2208\" data-end=\"2357\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"2208\" data-end=\"2236\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"1l1rbrk\" data-start=\"2237\" data-end=\"2264\"\u003eCatalog Number: JLLN600\u003c\/li\u003e\n\u003cli data-section-id=\"1qz3a0e\" data-start=\"2265\" data-end=\"2316\"\u003eProduct Type: Fast-Acting Current-Limiting Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"1vptq8d\" data-start=\"2317\" data-end=\"2333\"\u003eSeries: JLLN\u003c\/li\u003e\n\u003cli data-section-id=\"1unc6df\" data-start=\"2334\" data-end=\"2357\"\u003eFuse Class: Class T\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=\"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\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Littelfuse","offers":[{"title":"NEW","offer_id":48476352872697,"sku":"JLLN600","price":107.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/1280_EcQP2I2l3Bu74gsq_f9328a65-1d56-4773-807a-0cb597d0174c.jpg?v=1780408942","url":"https:\/\/mycircuitbreakers.com\/products\/littelfuse-jlln600-class-t-fuse-600a-300v-fast-acting-current-limiting-fuse","provider":"My Circuit Breakers","version":"1.0","type":"link"}