{"product_id":"littelfuse-flnr350-class-rk5-fuse-350a-250v-time-delay-fuse","title":"Littelfuse FLNR350 Class RK5 Fuse – 350A – 250V Time-Delay Fuse","description":"\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-2\" 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-b46429aa1619-2\" data-turn-id-container=\"request-6a11c9d2-fa5c-83e8-934f-b46429aa1619-2\" data-testid=\"conversation-turn-312\" 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=\"4cd4f166-a4f1-4aa4-9bca-388b21ada4d1\" 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=\"90\" data-end=\"552\"\u003eThe Littelfuse FLNR350 is a 350 Amp Class RK5 dual-element time-delay fuse designed for industrial and commercial electrical protection applications. Part of the FLNR series, this knife-blade fuse provides reliable overload and short-circuit protection for motors, transformers, feeders, and power distribution systems. Its time-delay characteristics allow temporary inrush currents to pass without nuisance opening while maintaining dependable fault protection.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1judnlb\" data-start=\"559\" data-end=\"580\"\u003eElectrical Rating\u003c\/h3\u003e\n\u003cul data-start=\"581\" data-end=\"729\"\u003e\n\u003cli data-section-id=\"qk5rd1\" data-start=\"581\" data-end=\"609\"\u003eCurrent Rating: 350 Amps\u003c\/li\u003e\n\u003cli data-section-id=\"1s8cdo9\" data-start=\"610\" data-end=\"641\"\u003eMaximum AC Voltage: 250 VAC\u003c\/li\u003e\n\u003cli data-section-id=\"1bhmmrc\" data-start=\"642\" data-end=\"673\"\u003eMaximum DC Voltage: 125 VDC\u003c\/li\u003e\n\u003cli data-section-id=\"1x6t7xi\" data-start=\"674\" data-end=\"729\"\u003eInterrupting Rating:\n\u003cul data-start=\"701\" data-end=\"729\"\u003e\n\u003cli data-section-id=\"1uz2u2b\" data-start=\"701\" data-end=\"714\"\u003e300 kA AC\u003c\/li\u003e\n\u003cli data-section-id=\"672013\" data-start=\"717\" data-end=\"729\"\u003e20 kA DC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"uvdx3z\" data-start=\"736\" data-end=\"758\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"759\" data-end=\"945\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"759\" data-end=\"787\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"1pm1f4y\" data-start=\"788\" data-end=\"815\"\u003eCatalog Number: FLNR350\u003c\/li\u003e\n\u003cli data-section-id=\"3zxftr\" data-start=\"816\" data-end=\"832\"\u003eSeries: FLNR\u003c\/li\u003e\n\u003cli data-section-id=\"rsvtqt\" data-start=\"833\" data-end=\"852\"\u003eFuse Class: RK5\u003c\/li\u003e\n\u003cli data-section-id=\"soa6gr\" data-start=\"853\" data-end=\"887\"\u003eConstruction Type: Knife-Blade\u003c\/li\u003e\n\u003cli data-section-id=\"jo8dmo\" data-start=\"888\" data-end=\"926\"\u003eFuse Type: Dual Element Time-Delay\u003c\/li\u003e\n\u003cli data-section-id=\"q4hlgv\" data-start=\"927\" data-end=\"945\"\u003eIndicating: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"krhh0r\" data-start=\"952\" data-end=\"982\"\u003eProtection Characteristics\u003c\/h3\u003e\n\u003cul data-start=\"983\" data-end=\"1251\"\u003e\n\u003cli data-section-id=\"10on5wt\" data-start=\"983\" data-end=\"1019\"\u003eTime-delay (slow-blow) operation\u003c\/li\u003e\n\u003cli data-section-id=\"d6wcog\" data-start=\"1020\" data-end=\"1048\"\u003eDual-element fuse design\u003c\/li\u003e\n\u003cli data-section-id=\"1608z5w\" data-start=\"1049\" data-end=\"1099\"\u003eProvides overload and short-circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"94pnkk\" data-start=\"1100\" data-end=\"1186\"\u003eHelps prevent nuisance opening from motor starting and transformer inrush currents\u003c\/li\u003e\n\u003cli data-section-id=\"9b2dwx\" data-start=\"1187\" data-end=\"1251\"\u003eHigh interrupting capacity for industrial electrical systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"xldzoc\" data-start=\"1258\" data-end=\"1283\"\u003eConstruction Features\u003c\/h3\u003e\n\u003cul data-start=\"1284\" data-end=\"1461\"\u003e\n\u003cli data-section-id=\"51zcjh\" data-start=\"1284\" data-end=\"1321\"\u003eKnife-blade terminal construction\u003c\/li\u003e\n\u003cli data-section-id=\"1lrgeqr\" data-start=\"1322\" data-end=\"1359\"\u003eNon-indicating fuse configuration\u003c\/li\u003e\n\u003cli data-section-id=\"12q6180\" data-start=\"1360\" data-end=\"1414\"\u003eIndustrial-grade design for demanding applications\u003c\/li\u003e\n\u003cli data-section-id=\"tkyouu\" data-start=\"1415\" data-end=\"1461\"\u003eDurable construction for long service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1dp59sz\" data-start=\"1468\" data-end=\"1496\"\u003eMounting \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cul data-start=\"1497\" data-end=\"1677\"\u003e\n\u003cli data-section-id=\"1yglfdu\" data-start=\"1497\" data-end=\"1544\"\u003eMounting Method: Fuse Block \/ Clip \/ Holder\u003c\/li\u003e\n\u003cli data-section-id=\"5vp8x6\" data-start=\"1545\" data-end=\"1607\"\u003eCompatible with standard Class RK5 fuse holders and blocks\u003c\/li\u003e\n\u003cli data-section-id=\"jpz4qk\" data-start=\"1608\" data-end=\"1677\"\u003eSuitable for industrial distribution equipment and control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wggvqn\" data-start=\"1684\" data-end=\"1700\"\u003eApplications\u003c\/h3\u003e\n\u003cul data-start=\"1701\" data-end=\"1892\"\u003e\n\u003cli data-section-id=\"fz1udj\" data-start=\"1701\" data-end=\"1736\"\u003eMotor branch circuit protection\u003c\/li\u003e\n\u003cli data-section-id=\"fknz5c\" data-start=\"1737\" data-end=\"1763\"\u003eTransformer protection\u003c\/li\u003e\n\u003cli data-section-id=\"gsgjc0\" data-start=\"1764\" data-end=\"1802\"\u003eIndustrial machinery and equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1b02wdy\" data-start=\"1803\" data-end=\"1849\"\u003eCommercial electrical distribution systems\u003c\/li\u003e\n\u003cli data-section-id=\"1y9e76g\" data-start=\"1850\" data-end=\"1892\"\u003eFeeder and branch circuit applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1aljov1\" data-start=\"1899\" data-end=\"1915\"\u003eProduct Data\u003c\/h3\u003e\n\u003cul data-start=\"1916\" data-end=\"2043\"\u003e\n\u003cli data-section-id=\"15ezalo\" data-start=\"1916\" data-end=\"1944\"\u003eManufacturer: Littelfuse\u003c\/li\u003e\n\u003cli data-section-id=\"1pm1f4y\" data-start=\"1945\" data-end=\"1972\"\u003eCatalog Number: FLNR350\u003c\/li\u003e\n\u003cli data-section-id=\"6027wp\" data-start=\"1973\" data-end=\"2006\"\u003eProduct Type: Time-Delay Fuse\u003c\/li\u003e\n\u003cli data-section-id=\"3zxftr\" data-start=\"2007\" data-end=\"2023\"\u003eSeries: FLNR\u003c\/li\u003e\n\u003cli data-section-id=\"rsvtqt\" data-start=\"2024\" data-end=\"2043\"\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":48459330617593,"sku":"FLNR350","price":85.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/7810\/7385\/files\/1280_c0DRt0WQURX11wbk_93f0f549-d657-40a2-8d35-5d02a741a7fb.jpg?v=1780162397","url":"https:\/\/mycircuitbreakers.com\/products\/littelfuse-flnr350-class-rk5-fuse-350a-250v-time-delay-fuse","provider":"My Circuit Breakers","version":"1.0","type":"link"}