{"product_id":"llnrk250","title":"LLNRK250 - 250Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eLLNRK250 - 250Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA motor starting up or a transformer being energized can draw a lot more current than it normally uses. That's expected. You don't want a fuse opening every time equipment experiences one of those brief surges.\u003c\/p\u003e\n\u003cp\u003eThe Littelfuse LLNRK250 is a 250 Amp, Class RK1 time-delay fuse designed to handle that challenge while protecting electrical circuits against overloads and short circuits. As part of the Littelfuse POWR-PRO series, it combines a dual-element design with current-limiting protection, making it a practical choice for commercial and industrial electrical systems.\u003c\/p\u003e\n\u003cp\u003eIf you're maintaining a distribution system or protecting equipment with demanding startup characteristics, the Littelfuse LLNRK250 250A time-delay fuse offers a useful combination of inrush tolerance, high interrupting capacity, and current-limiting performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e250 Amp Continuous Current Rating\u003c\/li\u003e\n\u003cli\u003eClass RK1 Current-Limiting Protection\u003c\/li\u003e\n\u003cli\u003eDual-Element Time-Delay Design\u003c\/li\u003e\n\u003cli\u003eTolerance for Temporary Startup Surges\u003c\/li\u003e\n\u003cli\u003eReduced Nuisance Fuse Openings\u003c\/li\u003e\n\u003cli\u003eHigh Short-Circuit Interrupting Capacity\u003c\/li\u003e\n\u003cli\u003eReduced Fault Energy Exposure\u003c\/li\u003e\n\u003cli\u003eLow-Resistance Construction\u003c\/li\u003e\n\u003cli\u003eThermally Reversible Overload Element\u003c\/li\u003e\n\u003cli\u003ePOWR-PRO Series Performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Littelfuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e LLNRK250\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e LLNRK\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Family:\u003c\/strong\u003e POWR-PRO\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Type:\u003c\/strong\u003e Dual-Element, Time-Delay Fuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e Class RK1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Current Rating:\u003c\/strong\u003e 250 Amps\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum AC Voltage:\u003c\/strong\u003e 250V AC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum DC Voltage:\u003c\/strong\u003e 125V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Interrupting Ratings:\u003c\/strong\u003e 200,000A and 300,000A at 250V AC, as listed by Littelfuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Interrupting Rating:\u003c\/strong\u003e 20,000A at 125V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Characteristic:\u003c\/strong\u003e Slo-Blo \/ Time Lag \/ Time Delay\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent-Limiting:\u003c\/strong\u003e Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload Element:\u003c\/strong\u003e Thermally Reversible, Spring-Loaded\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicating:\u003c\/strong\u003e No\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Method:\u003c\/strong\u003e Fuse Block \/ Clip \/ Holder\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Holder Series:\u003c\/strong\u003e LFR25400\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass H Fuse Block Compatibility:\u003c\/strong\u003e Suitable for compatible existing installations, subject to equipment ratings\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Compliance and Certifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Littelfuse LLNRK250 is part of the POWR-PRO Class RK1 fuse family, designed for time-delay overcurrent protection in appropriately rated electrical systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaterial Compliance: Refer to current Littelfuse documentation for RoHS and REACH status\u003c\/li\u003e\n\u003cli\u003eSafety Certifications: Verify applicable UL, CSA, and other certification listings in current manufacturer documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfirm certification listings and environmental compliance declarations using the manufacturer's latest product records.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eService Entrance Equipment\u003c\/li\u003e\n\u003cli\u003eMain Distribution Circuits\u003c\/li\u003e\n\u003cli\u003eFeeder Circuits\u003c\/li\u003e\n\u003cli\u003eGeneral-Purpose Branch Circuits\u003c\/li\u003e\n\u003cli\u003eIndustrial Motors\u003c\/li\u003e\n\u003cli\u003eTransformers\u003c\/li\u003e\n\u003cli\u003eSolenoids\u003c\/li\u003e\n\u003cli\u003eFluorescent Lighting Circuits\u003c\/li\u003e\n\u003cli\u003eHigh-Inrush Electrical Equipment\u003c\/li\u003e\n\u003cli\u003eCommercial Electrical Distribution\u003c\/li\u003e\n\u003cli\u003eIndustrial Machinery\u003c\/li\u003e\n\u003cli\u003eCompatible Class H Fuse Block Upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003cdiv\u003e\n\u003cblockquote\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eUse of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer.\u003cstrong\u003e CIRCUIT BREAKER SUPERSTORE®\u003c\/strong\u003e is an independent reseller and is \u003cstrong\u003enot \u003c\/strong\u003ean authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do \u003cstrong\u003enot\u003c\/strong\u003e apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eLittelfuse® is a registered trademark of Littelfuse, Inc. Products sold are surplus, used, or refurbished and are \u003cstrong\u003eNOT \u003c\/strong\u003esupplied by Littelfuse, Inc. or its affiliates.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Littelfuse","offers":[{"title":"New In Box","offer_id":50459264516395,"sku":"LLNRK250","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459264549163,"sku":"LLNRK250  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/llnrk250","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}