{"product_id":"flnr400-id","title":"FLNR400-ID - 400 Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFLNR400-ID - 400 Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen your circuit calls for a 400A Class RK5 time-delay fuse, the FLNR400-ID combines the electrical ratings and practical features required for demanding commercial and industrial applications. This 400-amp dual-element fuse is rated for up to 250VAC and 125VDC and uses a time-delay (Slo-Blo) design. That matters in equipment that can experience a temporary surge when it starts up—the fuse is designed to accommodate normal short-duration inrush current while still providing overcurrent protection. The FLNR400-ID also includes an indicating feature, which can make a real difference during maintenance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e400A current rating – Built for circuits and equipment requiring a 400-amp fuse.\u003c\/li\u003e\n\u003cli\u003eClass RK5 fuse – Designed for applications specified for Class RK5 protection.\u003c\/li\u003e\n\u003cli\u003eTime-delay performance – Helps accommodate normal temporary inrush currents that can occur when certain equipment starts.\u003c\/li\u003e\n\u003cli\u003eDual-element construction – Provides the operating characteristics expected from this type of time-delay fuse.\u003c\/li\u003e\n\u003cli\u003eIndicating design – Gives maintenance personnel a more convenient way to check fuse status during inspections and troubleshooting.\u003c\/li\u003e\n\u003cli\u003e250VAC and 125VDC ratings – Suitable for compatible AC and DC applications within the fuse's specified limits.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\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\u003eCatalog Number:\u003c\/strong\u003e FLNR400-ID \/ FLNR400ID\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e FLNR_ID\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 RK5\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 400A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum AC Voltage:\u003c\/strong\u003e 250VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum DC Voltage:\u003c\/strong\u003e 125VDC\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\u003eAC Interrupting Rating:\u003c\/strong\u003e Up to 300 kA\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Interrupting Rating:\u003c\/strong\u003e 20 kA\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicating:\u003c\/strong\u003e Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Knife-Blade\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\u003eSpecified Holder Series:\u003c\/strong\u003e LFR25400 Series\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 FLNR400-ID is identified as a Class RK5 fuse. Because certification, approval, and material-compliance requirements can vary by application, project, and jurisdiction, the appropriate documentation should be confirmed for the specific installation.\u003cbr\u003e\u003cbr\u003eIt's also worth checking more than amperage when replacing an existing fuse. Voltage rating, fuse class, interrupting capacity, time-delay characteristics, and physical style must all meet the requirements of the circuit and equipment.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe FLNR400-ID makes sense in applications where startup current is part of normal operation. Motors, transformers, industrial machinery, manufacturing equipment, and compatible electrical distribution systems are examples where a time-delay fuse may be specified. Rather than reacting unnecessarily to an acceptable momentary inrush, its time-delay characteristic is designed for applications where those brief current increases are expected.\u003cbr\u003e\u003cbr\u003eThe indicating feature is especially handy in facilities where maintenance speed matters. When a piece of equipment goes down, anything that makes troubleshooting more straightforward is useful. Technicians can more readily check fuse status and move on to the next step in diagnosing the circuit.\u003cbr\u003e\u003c\/p\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":50459181056299,"sku":"FLNR400-ID","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459181089067,"sku":"FLNR400-ID  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/flnr400-id","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}