{"product_id":"littelfuse-jlln400-class-t-fuse-400a-300v-fast-acting-current-limiting-fuse","title":"Littelfuse JLLN400 Class T Fuse – 400A – 300V Fast-Acting Current-Limiting Fuse","description":"\u003cp data-start=\"106\" data-end=\"595\"\u003eThe Littelfuse JLLN400 is a 400 Amp Class T fast-acting fuse engineered for superior protection in industrial and commercial electrical distribution systems. Part of the JLLN series, this current-limiting fuse delivers 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 well suited for applications requiring high interrupting capacity and space-efficient installation.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1judnlb\" data-start=\"602\" data-end=\"623\"\u003eElectrical Rating\u003c\/h3\u003e\n\u003cul data-start=\"624\" data-end=\"782\"\u003e\n\u003cli data-section-id=\"1oth10n\" data-start=\"624\" data-end=\"652\"\u003eCurrent Rating: 400 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1r9g6xp\" data-start=\"653\" data-end=\"684\"\u003eMaximum AC Voltage: 300 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1bhmmrc\" data-start=\"685\" data-end=\"716\"\u003eMaximum DC Voltage: 125 VDC\u003c\/li\u003e\n\u003cli data-section-id=\"1hyb0lc\" data-start=\"717\" data-end=\"782\"\u003eInterrupting Rating:\n\u003cul data-start=\"744\" data-end=\"782\"\u003e\n\u003cli data-section-id=\"5nvs4y\" data-start=\"744\" data-end=\"757\"\u003e200 kA AC\u003c\/li\u003e\n\u003cli data-section-id=\"oebnhc\" data-start=\"760\" data-end=\"782\"\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=\"789\" data-end=\"811\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"812\" data-end=\"1017\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"812\" data-end=\"840\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"1l365w2\" data-start=\"841\" data-end=\"868\"\u003eCatalog Number: JLLN400\u003c\/li\u003e\n\u003cli data-section-id=\"1vptq8d\" data-start=\"869\" data-end=\"885\"\u003eSeries: JLLN\u003c\/li\u003e\n\u003cli data-section-id=\"1unc6df\" data-start=\"886\" data-end=\"909\"\u003eFuse Class: Class T\u003c\/li\u003e\n\u003cli data-section-id=\"10wxn8r\" data-start=\"910\" data-end=\"954\"\u003eConstruction Type: Knife-Blade \/ Bolt-In\u003c\/li\u003e\n\u003cli data-section-id=\"12nf2bp\" data-start=\"955\" data-end=\"998\"\u003eFuse Type: Fast-Acting Current-Limiting\u003c\/li\u003e\n\u003cli data-section-id=\"q4hlgv\" data-start=\"999\" data-end=\"1017\"\u003eIndicating: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"krhh0r\" data-start=\"1024\" data-end=\"1054\"\u003eProtection Characteristics\u003c\/h3\u003e\n\u003cul data-start=\"1055\" data-end=\"1391\"\u003e\n\u003cli data-section-id=\"1a3lwdy\" data-start=\"1055\" data-end=\"1109\"\u003eFast-acting operation for rapid fault interruption\u003c\/li\u003e\n\u003cli data-section-id=\"mhtdtt\" data-start=\"1110\" data-end=\"1179\"\u003eCurrent-limiting design reduces fault energy and equipment stress\u003c\/li\u003e\n\u003cli data-section-id=\"1va1tnh\" data-start=\"1180\" data-end=\"1229\"\u003eProvides exceptional short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"4l91ui\" data-start=\"1230\" data-end=\"1301\"\u003eHigh interrupting capacity for demanding power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"1b99hf9\" data-start=\"1302\" data-end=\"1391\"\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=\"1398\" data-end=\"1423\"\u003eConstruction Features\u003c\/h3\u003e\n\u003cul data-start=\"1424\" data-end=\"1598\"\u003e\n\u003cli data-section-id=\"1ywu2gy\" data-start=\"1424\" data-end=\"1455\"\u003eCompact Class T fuse design\u003c\/li\u003e\n\u003cli data-section-id=\"166gte5\" data-start=\"1456\" data-end=\"1501\"\u003eKnife-blade\/bolt-in terminal construction\u003c\/li\u003e\n\u003cli data-section-id=\"1lrgeqr\" data-start=\"1502\" data-end=\"1539\"\u003eNon-indicating fuse configuration\u003c\/li\u003e\n\u003cli data-section-id=\"1o8gwn5\" data-start=\"1540\" data-end=\"1598\"\u003eIndustrial-duty construction for long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1dp59sz\" data-start=\"1605\" data-end=\"1633\"\u003eMounting \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul data-start=\"1634\" data-end=\"1862\"\u003e\n\u003cli data-section-id=\"scj4g6\" data-start=\"1634\" data-end=\"1693\"\u003eMounting Method: Fuse Block \/ Holder \/ Bolt-In Mounting\u003c\/li\u003e\n\u003cli data-section-id=\"1clzk5o\" data-start=\"1694\" data-end=\"1750\"\u003eCompatible with Class T fuse blocks and fuse holders\u003c\/li\u003e\n\u003cli data-section-id=\"fz17dt\" data-start=\"1751\" data-end=\"1862\"\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=\"1869\" data-end=\"1885\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"1886\" data-end=\"2143\"\u003e\n\u003cli data-section-id=\"n7lx3w\" data-start=\"1886\" data-end=\"1927\"\u003eIndustrial power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"z4icg\" data-start=\"1928\" data-end=\"1962\"\u003eUPS and battery backup systems\u003c\/li\u003e\n\u003cli data-section-id=\"x5ewh3\" data-start=\"1963\" data-end=\"1995\"\u003eSwitchboards and panelboards\u003c\/li\u003e\n\u003cli data-section-id=\"1n6q63g\" data-start=\"1996\" data-end=\"2021\"\u003eMotor control centers\u003c\/li\u003e\n\u003cli data-section-id=\"11fbwcj\" data-start=\"2022\" data-end=\"2079\"\u003eCurrent-limiting feeder and branch circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"iray4j\" data-start=\"2080\" data-end=\"2143\"\u003eProtection of sensitive electrical and electronic equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"2150\" data-end=\"2166\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"2167\" data-end=\"2316\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"2167\" data-end=\"2195\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"1l365w2\" data-start=\"2196\" data-end=\"2223\"\u003eCatalog Number: JLLN400\u003c\/li\u003e\n\u003cli data-section-id=\"1qz3a0e\" data-start=\"2224\" data-end=\"2275\"\u003eProduct Type: Fast-Acting Current-Limiting Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"1vptq8d\" data-start=\"2276\" data-end=\"2292\"\u003eSeries: JLLN\u003c\/li\u003e\n\u003cli data-section-id=\"1unc6df\" data-start=\"2293\" data-end=\"2316\"\u003eFuse Class: Class T\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Littelfuse","offers":[{"title":"NEW","offer_id":48476337996025,"sku":"JLLN400","price":86.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/1280_YDZJBpQVVWc03MD0_db8da9a9-3477-4f68-9849-0a9734bd164a.jpg?v=1780407853","url":"https:\/\/mycircuitbreakers.com\/products\/littelfuse-jlln400-class-t-fuse-400a-300v-fast-acting-current-limiting-fuse","provider":"My Circuit Breakers","version":"1.0","type":"link"}