{"product_id":"littelfuse-flsr250id-class-rk5-fuse-250a-600v-time-delay-indicating-fuse-1","title":"Littelfuse FLSR250ID Class RK5 Fuse – 250A – 600V Time-Delay Indicating Fuse","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-6\" 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-b46429aa1619-6\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-6\" data-testid=\"conversation-turn-330\" 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=\"a0a65e4b-6b03-4775-a19b-65363ad8a69f\" 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=\"103\" data-end=\"604\"\u003eThe Littelfuse FLSR250ID is a 250 Amp Class RK5 dual-element time-delay fuse designed for industrial and commercial electrical distribution systems. Part of the FLSR_ID series, this fuse features a built-in blown-fuse indicator that provides quick visual identification of an opened fuse, reducing troubleshooting time and simplifying maintenance. Its dual-element design allows temporary motor starting and transformer inrush currents while providing dependable overload and short-circuit protection.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1judnlb\" data-start=\"611\" data-end=\"632\"\u003eElectrical Rating\u003c\/h3\u003e\n\u003cul data-start=\"633\" data-end=\"791\"\u003e\n\u003cli data-section-id=\"upok9w\" data-start=\"633\" data-end=\"661\"\u003eCurrent Rating: 250 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1s2lsbc\" data-start=\"662\" data-end=\"693\"\u003eMaximum AC Voltage: 600 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"3p3ayl\" data-start=\"694\" data-end=\"725\"\u003eMaximum DC Voltage: 300 VDC\u003c\/li\u003e\n\u003cli data-section-id=\"3fy0ud\" data-start=\"726\" data-end=\"791\"\u003eInterrupting Rating:\n\u003cul data-start=\"753\" data-end=\"791\"\u003e\n\u003cli data-section-id=\"5nvs4y\" data-start=\"753\" data-end=\"766\"\u003e200 kA AC\u003c\/li\u003e\n\u003cli data-section-id=\"1fmwdnp\" data-start=\"769\" data-end=\"791\"\u003e20 kA DC @ 300 VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"798\" data-end=\"820\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"821\" data-end=\"1013\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"821\" data-end=\"849\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"16y8toz\" data-start=\"850\" data-end=\"879\"\u003eCatalog Number: FLSR250ID\u003c\/li\u003e\n\u003cli data-section-id=\"cwo91s\" data-start=\"880\" data-end=\"899\"\u003eSeries: FLSR_ID\u003c\/li\u003e\n\u003cli data-section-id=\"rsvtqt\" data-start=\"900\" data-end=\"919\"\u003eFuse Class: RK5\u003c\/li\u003e\n\u003cli data-section-id=\"soa6gr\" data-start=\"920\" data-end=\"954\"\u003eConstruction Type: Knife-Blade\u003c\/li\u003e\n\u003cli data-section-id=\"jo8dmo\" data-start=\"955\" data-end=\"993\"\u003eFuse Type: Dual Element Time-Delay\u003c\/li\u003e\n\u003cli data-section-id=\"a2fgkh\" data-start=\"994\" data-end=\"1013\"\u003eIndicating: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"krhh0r\" data-start=\"1020\" data-end=\"1050\"\u003eProtection Characteristics\u003c\/h3\u003e\n\u003cul data-start=\"1051\" data-end=\"1320\"\u003e\n\u003cli data-section-id=\"10on5wt\" data-start=\"1051\" data-end=\"1087\"\u003eTime-delay (slow-blow) operation\u003c\/li\u003e\n\u003cli data-section-id=\"19w665b\" data-start=\"1088\" data-end=\"1122\"\u003eDual-element fuse construction\u003c\/li\u003e\n\u003cli data-section-id=\"1608z5w\" data-start=\"1123\" data-end=\"1173\"\u003eProvides overload and short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"tzl6rz\" data-start=\"1174\" data-end=\"1247\"\u003eAccommodates temporary motor starting and transformer inrush currents\u003c\/li\u003e\n\u003cli data-section-id=\"c2lga\" data-start=\"1248\" data-end=\"1320\"\u003eHigh interrupting capacity for industrial power distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"xldzoc\" data-start=\"1327\" data-end=\"1352\"\u003eConstruction Features\u003c\/h3\u003e\n\u003cul data-start=\"1353\" data-end=\"1535\"\u003e\n\u003cli data-section-id=\"51zcjh\" data-start=\"1353\" data-end=\"1390\"\u003eKnife-blade terminal construction\u003c\/li\u003e\n\u003cli data-section-id=\"1pq47kc\" data-start=\"1391\" data-end=\"1431\"\u003eVisual blown-fuse indication feature\u003c\/li\u003e\n\u003cli data-section-id=\"7zu8p\" data-start=\"1432\" data-end=\"1485\"\u003eIndustrial-duty design for demanding applications\u003c\/li\u003e\n\u003cli data-section-id=\"a2lgf6\" data-start=\"1486\" data-end=\"1535\"\u003eEngineered for reliable long-term performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1dp59sz\" data-start=\"1542\" data-end=\"1570\"\u003eMounting \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul data-start=\"1571\" data-end=\"1791\"\u003e\n\u003cli data-section-id=\"1yglfdu\" data-start=\"1571\" data-end=\"1618\"\u003eMounting Method: Fuse Block \/ Clip \/ Holder\u003c\/li\u003e\n\u003cli data-section-id=\"1au6kun\" data-start=\"1619\" data-end=\"1686\"\u003eCompatible with standard Class RK5 fuse holders and fuse blocks\u003c\/li\u003e\n\u003cli data-section-id=\"18r6j0i\" data-start=\"1687\" data-end=\"1791\"\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=\"1798\" data-end=\"1814\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"1815\" data-end=\"2004\"\u003e\n\u003cli data-section-id=\"fz1udj\" data-start=\"1815\" data-end=\"1850\"\u003eMotor branch circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"fknz5c\" data-start=\"1851\" data-end=\"1877\"\u003eTransformer protection\u003c\/li\u003e\n\u003cli data-section-id=\"gsgjc0\" data-start=\"1878\" data-end=\"1916\"\u003eIndustrial machinery and equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1b02wdy\" data-start=\"1917\" data-end=\"1963\"\u003eCommercial electrical distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"14gqy7m\" data-start=\"1964\" data-end=\"2004\"\u003eFeeder and branch circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"2011\" data-end=\"2027\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"2028\" data-end=\"2171\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"2028\" data-end=\"2056\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"16y8toz\" data-start=\"2057\" data-end=\"2086\"\u003eCatalog Number: FLSR250ID\u003c\/li\u003e\n\u003cli data-section-id=\"wq1xpx\" data-start=\"2087\" data-end=\"2131\"\u003eProduct Type: Indicating Time-Delay Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"cwo91s\" data-start=\"2132\" data-end=\"2151\"\u003eSeries: FLSR_ID\u003c\/li\u003e\n\u003cli data-section-id=\"rsvtqt\" data-start=\"2152\" data-end=\"2171\"\u003eFuse Class: RK5\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":48471301751033,"sku":"FLSR250ID","price":113.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/1280_ojX0d02Bzuf31oYl.jpg?v=1780327601","url":"https:\/\/mycircuitbreakers.com\/products\/littelfuse-flsr250id-class-rk5-fuse-250a-600v-time-delay-indicating-fuse-1","provider":"My Circuit Breakers","version":"1.0","type":"link"}