{"product_id":"flsr350","title":"FLSR350 - 350Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eFLSR350 - 350Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe FLSR350 is a 350-amp Class RK5 time-delay fuse designed for electrical systems that require a higher current rating, delayed-opening characteristics, and knife-blade construction. Rated for applications up to 600V AC and 300V DC, this dual-element fuse uses a Slo-Blo \/ Time Lag (T) opening characteristic, allowing appropriate short-duration startup or inrush currents to occur without responding like a fast-acting fuse. That distinction matters when you're maintaining equipment where temporary increases in current are expected during normal operation. The FLSR350 is the non-indicating version, so it is particularly important to verify that detail when replacing an existing fuse.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e350A continuous rating – Matches circuits and equipment specifically requiring a 350-amp fuse.\u003c\/li\u003e\n\u003cli\u003eClass RK5 configuration – Provides an important fuse-class specification for correct replacement and application matching.\u003c\/li\u003e\n\u003cli\u003eTime-delay opening – Slo-Blo \/ Time Lag (T) characteristics accommodate appropriate brief inrush or startup currents before opening under sustained overcurrent conditions.\u003c\/li\u003e\n\u003cli\u003eDual-element construction – Combines dual-element construction with the fuse's specified time-delay behavior.\u003c\/li\u003e\n\u003cli\u003eKnife-blade style – Intended for installation in compatible fuse blocks, clips, or holders.\u003c\/li\u003e\n\u003cli\u003eNon-indicating configuration – Matches applications that specifically specify the standard non-indicating FLSR350.\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 FLSR350\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e FLSR\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 350A\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\u003eConstruction \/ Size:\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\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 LFR60400 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 specifications identify the FLSR350 as a Class RK5 fuse. However, catalog-specific UL, CSA, RoHS, or other certification and material-compliance declarations were not included in the information provided, so those details should not be assumed.\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 FLSR350 is best suited to electrical equipment specifically engineered for a 350A Class RK5 time-delay fuse with knife-blade construction. Its delayed opening characteristic makes it appropriate for correctly specified circuits that can experience acceptable, temporary increases in current during startup or normal operation. Those short-duration events are treated differently from sustained overcurrent conditions, which is one reason why matching the required fuse type matters.\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":50459187970347,"sku":"FLSR350","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459188003115,"sku":"FLSR350  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/flsr350","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}