{"product_id":"klsr003","title":"KLSR003 - 3Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eKLSR003 - 3Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe KLSR003 is a 3A Class RK1 fast-acting, current-limiting fuse designed for electrical equipment that requires a quick response to overloads and short circuits. Rated for a maximum of 600VAC and 250VDC, it combines a single-element silver-link design with an AC interrupting rating of 200,000A at 600VAC and a DC interrupting rating of 20,000A at 250VDC. The manufacturer specifically cautions that motors, transformers, solenoids, and other inductive loads can produce harmless inrush currents that may cause KLSR fuses to open unless they are significantly oversized. When you're replacing a fuse, check the full specification—3A rating, Class RK1, voltage, interrupting capacity, fast-acting characteristic, cartridge construction, and mounting compatibility—rather than relying 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\u003e3A continuous current rating for equipment specifically designed to use a 3-amp Class RK1 fuse.\u003c\/li\u003e\n\u003cli\u003eFast-acting (F) operation provides rapid response to overload and short-circuit conditions.\u003c\/li\u003e\n\u003cli\u003eThe current-limiting design helps reduce equipment damage associated with the heating and magnetic effects of short-circuit current.\u003c\/li\u003e\n\u003cli\u003eHandles applications requiring up to a 600VAC maximum voltage rating.\u003c\/li\u003e\n\u003cli\u003eAlso rated for up to 250VDC when equipment and circuit requirements are compatible.\u003c\/li\u003e\n\u003cli\u003eThe KLSR series uses a single-element silver-link construction to deliver fast-acting characteristics.\u003c\/li\u003e\n\u003cli\u003eIndustrial cartridge format supports installation in equipment designed for this fuse configuration.\u003c\/li\u003e\n\u003cli\u003eInstalls using a compatible fuse block, clip, or holder.\u003c\/li\u003e\n\u003cli\u003eLFR60030 Series is the specified holder reference provided for the KLSR003.\u003c\/li\u003e\n\u003cli\u003eMatch the non-indicating design 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 KLSR003\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Description:\u003c\/strong\u003e FUS 600V F\/A CLASS RK1 3A\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 3A\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 supplied manufacturer information specifically describes the KLSR series as using a single-element silver link. The supplied specifications do not include a complete product-specific material breakdown for the KLSR003—including body, terminal, filler, and other construction materials—so do not assume additional materials.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe KLSR003 best matches electrical equipment that requires a 3A, Class RK1, fast-acting, current-limiting industrial cartridge fuse. Manufacturer guidance points to variable speed drives, rectifiers, and equipment containing surge-sensitive components as examples where the KLSR series' fast-acting characteristics can be useful.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eFor AC service, confirm that the equipment requirements fall within the 600VAC maximum rating and 200,000A interrupting rating at 600VAC. For DC service, verify compatibility with the 250VDC maximum and 20,000A interrupting rating at 250VDC. Installation must also match the industrial cartridge configuration and use the appropriate fuse block, clip, or holder; the supplied holder reference is the LFR60030 Series.\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":50459235483947,"sku":"KLSR003","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459235516715,"sku":"KLSR003  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/klsr003","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}