{"product_id":"klsr090","title":"KLSR090 - 90Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eKLSR090 - 90Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 90-amp rating is only the first thing to check when you're replacing a fuse. The KLSR090 is a 90A Class RK1 fast-acting, current-limiting fuse built around a single-element silver-link design and rated for up to 600VAC or 300VDC. However, don't choose a fuse based on amperage alone: confirm the Class RK1 requirement, fast-acting characteristic, AC or DC voltage, interrupting capacity, physical configuration, and equipment specifications before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e90A continuous current rating for equipment specifically designed around a 90-amp fuse requirement.\u003c\/li\u003e\n\u003cli\u003eClass RK1 fuse configuration provides a defined fuse class for accurate replacement matching.\u003c\/li\u003e\n\u003cli\u003eFast-acting (F) operation provides rapid overload and short-circuit protection.\u003c\/li\u003e\n\u003cli\u003eThe single-element silver-link design is a defining construction characteristic of the KLSR Series.\u003c\/li\u003e\n\u003cli\u003eCurrent-limiting construction helps reduce equipment damage caused by the heating and magnetic effects of short-circuit currents.\u003c\/li\u003e\n\u003cli\u003eSupports applications requiring a fuse rated up to 600VAC.\u003c\/li\u003e\n\u003cli\u003eA 300VDC maximum rating also allows use in compatible DC equipment when all applicable requirements are satisfied.\u003c\/li\u003e\n\u003cli\u003eKnife-blade construction provides the KLSR090's specified physical connection format.\u003c\/li\u003e\n\u003cli\u003eThe fuse is non-indicating, so it does not incorporate a blown-fuse indicator.\u003c\/li\u003e\n\u003cli\u003eInstalls using a compatible fuse block, clip, or holder.\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 KLSR090\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Description:\u003c\/strong\u003e FUS 600V F\/A CLASS RK1 90A\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 90A\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 300VDC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Interrupting Capacity:\u003c\/strong\u003e 200,000A at 600VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Interrupting Capacity:\u003c\/strong\u003e 20,000A at 300VDC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed Interrupting Rating:\u003c\/strong\u003e 20 kA at 300VDC\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 Knife-Blade\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 PG Holder:\u003c\/strong\u003e LFR60100 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 specifically describes the KLSR Series as using a single-element silver-link design, so silver is identified for the fuse link. However, the supplied information does not provide a complete, product-specific material breakdown for the KLSR090, and it does not include environmental compliance declarations for this exact catalog number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe KLSR090 90A fuse is a strong match for electrical equipment specifically designed to use a 90A Class RK1 fast-acting, current-limiting fuse with the corresponding electrical and physical requirements. The manufacturer specifically identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as applications where the KLSR Series' fast-acting protection can be useful. Its current-limiting design is also intended to reduce equipment damage associated with the heating and magnetic effects of short-circuit currents.\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":50459236729131,"sku":"KLSR090","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459236761899,"sku":"KLSR090  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/klsr090","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}