{"product_id":"klsr004","title":"KLSR004 - 4Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eKLSR004 - 4Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe KLSR004 is a 4A Class RK1 fast-acting, current-limiting fuse designed for your electrical equipment that requires quick response to overloads and short circuits. Its electrical ratings are specific: up to 600VAC or 250VDC, with an AC interrupting rating of 200,000A at 600VAC and a DC interrupting rating of 20,000A at 250VDC. For anyone replacing an existing fuse, the 4A rating is only one part of the match. Class RK1, fast-acting operation, AC\/DC voltage ratings, interrupting capacity, physical configuration, and mounting requirements should all agree with the equipment specification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4A continuous current rating for equipment designed around a 4-amp Class RK1 fuse.\u003c\/li\u003e\n\u003cli\u003eThe fast-acting (F) opening characteristic provides a quick response to overload and short-circuit conditions.\u003c\/li\u003e\n\u003cli\u003eThe current-limiting design helps reduce equipment damage from the heating and magnetic effects of short-circuit currents.\u003c\/li\u003e\n\u003cli\u003eRated for a maximum of 600VAC, supporting equipment that specifically requires this AC voltage class.\u003c\/li\u003e\n\u003cli\u003eAlso carries a 250VDC maximum voltage rating for compatible DC applications.\u003c\/li\u003e\n\u003cli\u003eThe KLSR series uses a single-element silver-link design to deliver fast-acting performance.\u003c\/li\u003e\n\u003cli\u003eMatch industrial cartridge construction to the equipment's physical requirements.\u003c\/li\u003e\n\u003cli\u003eDesigned for installation through a compatible fuse block, clip, or holder.\u003c\/li\u003e\n\u003cli\u003eThe specified holder reference for this catalog number is the LFR60030 Series.\u003c\/li\u003e\n\u003cli\u003eThe non-indicating design makes indicating status another specification to confirm when replacing an existing fuse.\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 KLSR004\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Description:\u003c\/strong\u003e FUS 600V F\/A CLASS RK1 4A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e KLSR\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Fast-Acting, Current-Limiting Fuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Current Rating:\u003c\/strong\u003e 4A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum AC Voltage:\u003c\/strong\u003e 600VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum DC Voltage:\u003c\/strong\u003e 250VDC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Interrupting Rating:\u003c\/strong\u003e 200,000A at 600VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Interrupting Rating:\u003c\/strong\u003e 20,000A at 250VDC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpening Characteristic:\u003c\/strong\u003e Fast-Acting (F)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e Class RK1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamily Style:\u003c\/strong\u003e Current Limiting\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction \/ Size:\u003c\/strong\u003e Industrial Cartridge\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElement Design:\u003c\/strong\u003e Single-element silver link\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\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 LFR60030 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 manufacturer identifies a silver link as part of the KLSR series' single-element construction. The supplied product information does not provide a complete KLSR004-specific material composition for the cartridge body, terminals, filler, or other components, so do not assume additional construction materials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe KLSR004 is a strong fit for electrical equipment specifically designed around a 4A Class RK1 fast-acting, current-limiting industrial cartridge fuse. Manufacturer guidance identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as examples where the KLSR series' fast-acting response can be useful.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eFor AC installations, confirm the equipment requirements match the 600VAC maximum rating and 200,000A interrupting rating at 600VAC. For DC applications, check against the 250VDC maximum and 20,000A interrupting rating at 250VDC. Physical compatibility also matters: the KLSR004 is an industrial cartridge fuse intended for a suitable fuse block, clip, or holder, with the LFR60030 Series provided as the specified holder reference.\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":50459235549483,"sku":"KLSR004","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459235582251,"sku":"KLSR004  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/klsr004","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}