{"product_id":"flsr450-id","title":"FLSR450-ID - 450Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFLSR450-ID - 450Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt 450 amps, fuse selection leaves little room for \"close enough.\" The FLSR450-ID is a 450A Class RK5 dual-element time-delay fuse with an indicating design, knife-blade construction, and ratings up to 600V AC and 300V DC. The FLSR450-ID also carries a 20 kA interrupting rating at 300V DC, while the supplied manufacturer specifications list AC interrupt-amperage values of 200 kA and 300 kA at 600V AC under applicable rating conditions. If you're matching an existing FLSR450-ID, verify the entire specification—not merely the 450A number on the label.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e450A continuous current rating – Made for equipment and circuits specifically requiring a 450-amp Class RK5 fuse.\u003c\/li\u003e\n\u003cli\u003eClass RK5 construction – Gives maintenance professionals an important fuse-class specification for accurate replacement matching.\u003c\/li\u003e\n\u003cli\u003eTime-delay operation – Helps accommodate appropriate temporary inrush and startup currents rather than behaving like a fast-acting fuse.\u003c\/li\u003e\n\u003cli\u003eDual-element fuse design – Provides the operating characteristics associated with the FLSR-ID time-delay family.\u003c\/li\u003e\n\u003cli\u003eIndicating configuration – Useful during maintenance and troubleshooting when technicians need to determine fuse status.\u003c\/li\u003e\n\u003cli\u003eKnife-blade style – Configured for installation with compatible fuse blocks, clips, and holders.\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 FLSR450-ID\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Reference:\u003c\/strong\u003e FLSR450ID\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e FLSR_ID\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct 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\u003eContinuous Current Rating:\u003c\/strong\u003e 450A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum AC Voltage:\u003c\/strong\u003e 600V AC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum DC Voltage:\u003c\/strong\u003e 300V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Characteristic:\u003c\/strong\u003e Slo-Blo \/ Time Lag (T) \/ Time Delay\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\u003eFamily Style:\u003c\/strong\u003e Dual Element Fuse\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\u003eDC Interrupting Rating:\u003c\/strong\u003e 20,000A (20 kA) at 300V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-Listed AC Interrupt Amperage:\u003c\/strong\u003e 200,000A and 300,000A at 600V AC*\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\u003ePG Holder:\u003c\/strong\u003e LFR60600 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 supplied manufacturer information identifies the FLSR450-ID as a Class RK5 fuse. Still, it does not provide enough catalog-specific information to accurately state individual UL, CSA, RoHS, or other certification and material-compliance declarations.\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 FLSR450-ID makes sense in properly engineered electrical systems calling for a 450A, 600V AC Class RK5 time-delay fuse, particularly where brief startup or inrush current is part of normal equipment operation. Its time-delay characteristic allows appropriate temporary increases in current within its specified time-current behavior, rather than opening like a fast-acting fuse.\u003cbr\u003e\u003cbr\u003eThere is also a practical distinction in maintenance here. The \"-ID\" version indicates, making it especially useful in installations where easier fuse-status checking can help technicians during inspection and troubleshooting. That's worth confirming during replacement work; a fuse with the same 450A rating but a different indicating configuration isn't necessarily the same component.\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":50459188330795,"sku":"FLSR450-ID","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459188363563,"sku":"FLSR450-ID  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/flsr450-id","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}