{"product_id":"flsr500-id","title":"FLSR500-ID - 500 Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFLSR500-ID - 500 Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReplacing a 500A fuse isn’t something you want to do by matching the amp rating and calling it done. The FLSR500-ID is a 500A Class RK5 indicating time-delay fuse with a 600V AC maximum rating, 300V DC maximum rating, and knife-blade construction. What makes this particular model stand out is the combination of dual-element time-delay operation and an indicating design. Whether you’re replacing an existing fuse during scheduled maintenance or matching a component to an equipment specification, checking the fuse class, voltage, interrupting requirements, indicating style, and physical configuration helps ensure you’re getting the right part—not simply another 500A fuse.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e500A continuous current rating – Made for applications specifically calling for 500-amp fuse protection.\u003c\/li\u003e\n\u003cli\u003eClass RK5 configuration – An important specification to match when replacing a fuse in equipment designed around Class RK5 protection.\u003c\/li\u003e\n\u003cli\u003eTime-delay performance – Slo-Blo \/ Time Lag (T) operation accommodates appropriate temporary startup and inrush currents within the fuse’s specified time-current characteristics.\u003c\/li\u003e\n\u003cli\u003eIndicating design – Helps distinguish this model from the non-indicating FLSR500 when identifying the correct replacement.\u003c\/li\u003e\n\u003cli\u003eDual-element fuse – Combines dual-element construction with time-delay operation.\u003c\/li\u003e\n\u003cli\u003eKnife-blade construction – Intended for a compatible fuse block, clip, or holder.\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 FLSR500-ID\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Reference:\u003c\/strong\u003e FLSR500ID\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\u003eFuse Type:\u003c\/strong\u003e Indicating 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 500A\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\u003eFamily Style:\u003c\/strong\u003e Dual Element Fuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize \/ Construction:\u003c\/strong\u003e Knife-Blade\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 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\u003eWhen you’re dealing with a high-amperage fuse, assumptions about certifications aren’t worth making. The supplied product information identifies the FLSR500-ID as a Class RK5 fuse, but it does not include catalog-specific UL, CSA, RoHS, or other compliance details.\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 FLSR500-ID makes the most sense in electrical systems specifically calling for a 500A, Class RK5, time-delay indicating fuse. Its time-delay operation is particularly relevant in properly engineered circuits where normal equipment operation can produce brief startup or inrush currents that should not result in unnecessary fuse opening.\u003cbr\u003e\u003cbr\u003eIt’s also a useful choice when the indicating version is part of the equipment specification. That detail is easy to overlook when two fuse catalog numbers look almost identical, so maintenance teams should confirm the complete model designation before replacement.\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":50459188461867,"sku":"FLSR500-ID","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459188494635,"sku":"FLSR500-ID  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/flsr500-id","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}