{"product_id":"flsr450","title":"FLSR450 - 450Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFLSR450 - 450Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe FLSR450 is a 450A, 600V AC Class R time-delay fuse designed for electrical systems that require high current capacity and substantial fault-current interruption. For maintenance teams replacing an existing FLSR450, the important details go well beyond the 450-amp rating: this is a non-indicating, knife-blade Class R fuse with a 600V AC rating and specific physical dimensions. That combination matters when you're trying to match an existing installation accurately rather than choosing a fuse based on amperage alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e450A rating – Matches applications specifically requiring a 450-amp fuse.\u003c\/li\u003e\n\u003cli\u003e600V AC rating – Intended for properly specified AC systems operating within the fuse's published voltage rating.\u003c\/li\u003e\n\u003cli\u003eTime-delay operation – Allows appropriate short-duration inrush or startup current without the response characteristics of a fast-acting fuse.\u003c\/li\u003e\n\u003cli\u003eCurrent-limiting Class R design – Helps limit fault-current energy during applicable overcurrent conditions.\u003c\/li\u003e\n\u003cli\u003eKnife-blade style – Provides the physical configuration required for compatible fuse mounting equipment.\u003c\/li\u003e\n\u003cli\u003eNon-indicating configuration – Important to know when matching the FLSR450 to an existing fuse specification.\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\u003ePart Number:\u003c\/strong\u003e FLSR450\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e FLSR\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Time-Delay Current-Limiting Fuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 450A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600V AC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA.I.C. Rating:\u003c\/strong\u003e 200 kA at 600V AC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e Class R\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Characteristic:\u003c\/strong\u003e Time-Delay\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Knife-Blade\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\u003eCurrent-Limiting:\u003c\/strong\u003e Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 13.38\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 3.04\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepth:\u003c\/strong\u003e 3.04\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 available product information identifies the FLSR450 as a current-limiting Class R fuse, but it does not provide catalog-specific material-compliance declarations or individual certification listings. Rather than assume approvals based on similar products in the FLSR family, any required UL, CSA, RoHS, or other certification or material-compliance documentation should be confirmed for the exact FLSR450 part number.\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 450A fuse is best suited to electrical installations that specifically require a 600V AC, 450A Class R current-limiting fuse with time-delay characteristics. The time-delay response is useful in properly engineered circuits where brief inrush or startup currents are expected during normal operation and should not be treated the same way as a sustained overcurrent condition.\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":50459188265259,"sku":"FLSR450","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459188298027,"sku":"FLSR450  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/flsr450","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}