{"product_id":"littelfuse-klsr125-125a-class-rk1-fast-acting-fuse-knife-blade-600vac-300vdc","title":"Littelfuse KLSR125 125A Class RK1 Fast-Acting Fuse – Knife-Blade – 600VAC\/300VDC","description":"\u003cp data-start=\"86\" data-end=\"646\"\u003eThe Littelfuse KLSR125 is a Class RK1 fast-acting current-limiting fuse designed to provide reliable short-circuit protection for industrial and commercial electrical systems. As part of the KLSR series, it features a single-element silver link construction that enables rapid response to overcurrent conditions. This fuse is suitable for applications such as variable speed drives, rectifiers, solenoids, and other surge-sensitive equipment, though it must be properly oversized in inductive load applications to avoid nuisance opening due to inrush currents.\u003c\/p\u003e\n\u003ch3 data-section-id=\"yc43s8\" data-start=\"648\" data-end=\"670\"\u003eVoltage and Rating\u003c\/h3\u003e\n\u003cul data-start=\"671\" data-end=\"820\"\u003e\n\u003cli data-section-id=\"1f9hxid\" data-start=\"671\" data-end=\"697\"\u003eCurrent Rating: 125 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"10uce35\" data-start=\"698\" data-end=\"728\"\u003eVoltage Rating: 600 Volts AC\u003c\/li\u003e\n\u003cli data-section-id=\"9fd05y\" data-start=\"729\" data-end=\"762\"\u003eDC Voltage Rating: 300 Volts DC\u003c\/li\u003e\n\u003cli data-section-id=\"1cuenj9\" data-start=\"763\" data-end=\"820\"\u003eInterrupting Rating: 200 kA AIR (up to 20 kA @ 300 VDC)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"822\" data-end=\"844\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"845\" data-end=\"1044\"\u003e\n\u003cli data-section-id=\"wijt83\" data-start=\"845\" data-end=\"873\"\u003eFuse Type: Fast-Acting (F)\u003c\/li\u003e\n\u003cli data-section-id=\"1unc7hb\" data-start=\"874\" data-end=\"897\"\u003eFuse Class: Class RK1\u003c\/li\u003e\n\u003cli data-section-id=\"k4fsuj\" data-start=\"898\" data-end=\"926\"\u003eMounting Type: Knife-Blade\u003c\/li\u003e\n\u003cli data-section-id=\"b0m8sv\" data-start=\"927\" data-end=\"941\"\u003eSeries: KLSR\u003c\/li\u003e\n\u003cli data-section-id=\"1kphyi2\" data-start=\"942\" data-end=\"979\"\u003eFamily Style: Current Limiting Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"5t5xdd\" data-start=\"980\" data-end=\"1044\"\u003eApplication: Short-circuit protection for industrial equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"nucr17\" data-start=\"1046\" data-end=\"1074\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-start=\"1075\" data-end=\"1407\"\u003e\n\u003cli data-section-id=\"qiwjk0\" data-start=\"1075\" data-end=\"1112\"\u003eOpening Characteristic: Fast-Acting\u003c\/li\u003e\n\u003cli data-section-id=\"hdskf5\" data-start=\"1113\" data-end=\"1136\"\u003eCurrent Limiting: Yes\u003c\/li\u003e\n\u003cli data-section-id=\"1izn0e4\" data-start=\"1137\" data-end=\"1171\"\u003eInterrupt Amperage: 200,000 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1892vgj\" data-start=\"1172\" data-end=\"1221\"\u003eConstruction: Single-element silver link design\u003c\/li\u003e\n\u003cli data-section-id=\"1yylb92\" data-start=\"1222\" data-end=\"1307\"\u003eEquipment Compatibility: Variable speed drives, rectifiers, surge-sensitive devices\u003c\/li\u003e\n\u003cli data-section-id=\"79yheb\" data-start=\"1308\" data-end=\"1407\"\u003eSafety Rating: High interrupting capacity minimizes need for extensive short-circuit calculations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"1409\" data-end=\"1425\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"1426\" data-end=\"1512\"\u003e\n\u003cli data-section-id=\"1xtv818\" data-start=\"1426\" data-end=\"1452\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"gb0bn2\" data-start=\"1453\" data-end=\"1476\"\u003eModel Number: KLSR125\u003c\/li\u003e\n\u003cli data-section-id=\"15kmg9l\" data-start=\"1477\" data-end=\"1512\"\u003eSeries: KLSR RK1 Fast-Acting Fuse\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"19zqy0x\" data-start=\"1514\" data-end=\"1526\"\u003eFeatures\u003c\/h3\u003e\n\u003cul data-start=\"1527\" data-end=\"1878\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"n66kro\" data-start=\"1527\" data-end=\"1583\"\u003eExtremely current-limiting for fast fault interruption\u003c\/li\u003e\n\u003cli data-section-id=\"13e44gz\" data-start=\"1584\" data-end=\"1644\"\u003eReliable interruption up to 200 kA available fault current\u003c\/li\u003e\n\u003cli data-section-id=\"crhneg\" data-start=\"1645\" data-end=\"1701\"\u003eProtects sensitive electronic and industrial equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1od4qe7\" data-start=\"1702\" data-end=\"1756\"\u003eCompact knife-blade design for standard fuse holders\u003c\/li\u003e\n\u003cli data-section-id=\"1oko51v\" data-start=\"1757\" data-end=\"1814\"\u003eHelps reduce equipment damage from short-circuit energy\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Littelfuse","offers":[{"title":"NEW","offer_id":48478303912185,"sku":"KLSR125","price":210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/1280_QSRBjakXfiD11k7U.jpg?v=1780434438","url":"https:\/\/mycircuitbreakers.com\/products\/littelfuse-klsr125-125a-class-rk1-fast-acting-fuse-knife-blade-600vac-300vdc","provider":"My Circuit Breakers","version":"1.0","type":"link"}