{"product_id":"littelfuse-jls400-class-j-fuse-400a-600v-fast-acting-current-limiting-fuse","title":"Littelfuse JLS400 Class J Fuse – 400A – 600V Fast-Acting Current-Limiting Fuse","description":"\u003cp data-start=\"105\" data-end=\"593\"\u003eThe Littelfuse JLS400 is a 400 Amp Class J fast-acting fuse designed for superior circuit protection in industrial and commercial electrical distribution systems. Part of the JLS series, this current-limiting fuse provides rapid fault interruption to reduce let-through energy and help protect equipment from damaging short-circuit currents. Its compact knife-blade construction allows for space-efficient installation while delivering high interrupting capacity and reliable performance.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1judnlb\" data-start=\"600\" data-end=\"621\"\u003eElectrical Rating\u003c\/h3\u003e\n\u003cul data-start=\"622\" data-end=\"724\"\u003e\n\u003cli data-section-id=\"1oth10n\" data-start=\"622\" data-end=\"650\"\u003eCurrent Rating: 400 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1s2lsbc\" data-start=\"651\" data-end=\"682\"\u003eMaximum AC Voltage: 600 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"wa7brc\" data-start=\"683\" data-end=\"724\"\u003eInterrupting Rating: 200 kA @ 600 VAC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"731\" data-end=\"753\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"754\" data-end=\"947\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"754\" data-end=\"782\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"17558tf\" data-start=\"783\" data-end=\"809\"\u003eCatalog Number: JLS400\u003c\/li\u003e\n\u003cli data-section-id=\"8ics1o\" data-start=\"810\" data-end=\"825\"\u003eSeries: JLS\u003c\/li\u003e\n\u003cli data-section-id=\"1uncs7x\" data-start=\"826\" data-end=\"849\"\u003eFuse Class: Class J\u003c\/li\u003e\n\u003cli data-section-id=\"soa6gr\" data-start=\"850\" data-end=\"884\"\u003eConstruction Type: Knife-Blade\u003c\/li\u003e\n\u003cli data-section-id=\"12nf2bp\" data-start=\"885\" data-end=\"928\"\u003eFuse Type: Fast-Acting Current-Limiting\u003c\/li\u003e\n\u003cli data-section-id=\"q4hlgv\" data-start=\"929\" data-end=\"947\"\u003eIndicating: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"krhh0r\" data-start=\"954\" data-end=\"984\"\u003eProtection Characteristics\u003c\/h3\u003e\n\u003cul data-start=\"985\" data-end=\"1310\"\u003e\n\u003cli data-section-id=\"jjixkw\" data-start=\"985\" data-end=\"1035\"\u003eFast-acting operation for rapid fault clearing\u003c\/li\u003e\n\u003cli data-section-id=\"zfjuip\" data-start=\"1036\" data-end=\"1110\"\u003eCurrent-limiting design minimizes let-through current and fault energy\u003c\/li\u003e\n\u003cli data-section-id=\"1va1tnh\" data-start=\"1111\" data-end=\"1160\"\u003eProvides exceptional short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"vgaczr\" data-start=\"1161\" data-end=\"1230\"\u003eHigh interrupting capacity for demanding industrial power systems\u003c\/li\u003e\n\u003cli data-section-id=\"1vo7u0p\" data-start=\"1231\" data-end=\"1310\"\u003eHelps protect electrical and electronic equipment from fault-related damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"xldzoc\" data-start=\"1317\" data-end=\"1342\"\u003eConstruction Features\u003c\/h3\u003e\n\u003cul data-start=\"1343\" data-end=\"1525\"\u003e\n\u003cli data-section-id=\"4ahhy4\" data-start=\"1343\" data-end=\"1374\"\u003eCompact Class J fuse design\u003c\/li\u003e\n\u003cli data-section-id=\"51zcjh\" data-start=\"1375\" data-end=\"1412\"\u003eKnife-blade terminal construction\u003c\/li\u003e\n\u003cli data-section-id=\"1lrgeqr\" data-start=\"1413\" data-end=\"1450\"\u003eNon-indicating fuse configuration\u003c\/li\u003e\n\u003cli data-section-id=\"1kanifq\" data-start=\"1451\" data-end=\"1525\"\u003eRugged industrial-duty construction for dependable long-term operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1dp59sz\" data-start=\"1532\" data-end=\"1560\"\u003eMounting \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul data-start=\"1561\" data-end=\"1772\"\u003e\n\u003cli data-section-id=\"o14hrv\" data-start=\"1561\" data-end=\"1601\"\u003eMounting Method: Fuse Block \/ Holder\u003c\/li\u003e\n\u003cli data-section-id=\"1444ocp\" data-start=\"1602\" data-end=\"1667\"\u003eCompatible with standard Class J fuse holders and fuse blocks\u003c\/li\u003e\n\u003cli data-section-id=\"18r6j0i\" data-start=\"1668\" data-end=\"1772\"\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=\"1779\" data-end=\"1795\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"1796\" data-end=\"2040\"\u003e\n\u003cli data-section-id=\"n7lx3w\" data-start=\"1796\" data-end=\"1837\"\u003eIndustrial power distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"x5ewh3\" data-start=\"1838\" data-end=\"1870\"\u003eSwitchboards and panelboards\u003c\/li\u003e\n\u003cli data-section-id=\"1n6q63g\" data-start=\"1871\" data-end=\"1896\"\u003eMotor control centers\u003c\/li\u003e\n\u003cli data-section-id=\"1whrcuq\" data-start=\"1897\" data-end=\"1937\"\u003eBranch and feeder circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"1h5vztv\" data-start=\"1938\" data-end=\"1987\"\u003eIndustrial machinery and equipment protection\u003c\/li\u003e\n\u003cli data-section-id=\"1uy8e8\" data-start=\"1988\" data-end=\"2040\"\u003eCurrent-limiting circuit protection applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"2047\" data-end=\"2063\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"2064\" data-end=\"2211\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"2064\" data-end=\"2092\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"17558tf\" data-start=\"2093\" data-end=\"2119\"\u003eCatalog Number: JLS400\u003c\/li\u003e\n\u003cli data-section-id=\"1qz3a0e\" data-start=\"2120\" data-end=\"2171\"\u003eProduct Type: Fast-Acting Current-Limiting Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"8ics1o\" data-start=\"2172\" data-end=\"2187\"\u003eSeries: JLS\u003c\/li\u003e\n\u003cli data-section-id=\"1uncs7x\" data-start=\"2188\" data-end=\"2211\"\u003eFuse Class: Class J\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Littelfuse","offers":[{"title":"NEW","offer_id":48476596371705,"sku":"JLS400","price":205.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/1280_Y8JSU7eisTm41Yyt.jpg?v=1780411113","url":"https:\/\/mycircuitbreakers.com\/products\/littelfuse-jls400-class-j-fuse-400a-600v-fast-acting-current-limiting-fuse","provider":"My Circuit Breakers","version":"1.0","type":"link"}