{"product_id":"kllu1800","title":"KLLU1800 - 1800Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eKLLU1800 - 1800Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen your equipment calls for an 1800A Class L fuse, amperage is only the first specification to check. The KLLU1800 is a 1800-amp time-delay, current-limiting fuse with bolt-in construction, a maximum rating of 600VAC or 300VDC, and a 200,000A interrupting rating at 600VAC. Its current-limiting design is intended to reduce short-circuit damage to equipment and electrical systems. The manufacturer identifies the KLLU Series as UL Listed and states that it meets or exceeds UL requirements for Class L fuses. For replacement work, match the full electrical and physical specifications—including fuse class, voltage, interrupting capacity, time-delay characteristic, and bolt-in mounting—rather than relying on the 1800A rating alone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1800A continuous current rating for equipment designed around an 1800-amp Class L fuse.\u003c\/li\u003e\n\u003cli\u003eClass L fuse design provides a clearly defined electrical and physical class to verify when selecting a replacement.\u003c\/li\u003e\n\u003cli\u003eTime-delay operation helps accommodate temporary current increases associated with startup conditions.\u003c\/li\u003e\n\u003cli\u003eThe KLLU Series has a minimum 10-second time delay at 500% of its current rating, helping avoid unnecessary fuse operation from heavy starting currents of large motors and other inductive loads.\u003c\/li\u003e\n\u003cli\u003eCurrent-limiting performance is designed to reduce short-circuit damage to systems and equipment.\u003c\/li\u003e\n\u003cli\u003eRated for AC systems up to 600VAC.\u003c\/li\u003e\n\u003cli\u003eRated for DC applications up to 300VDC, provided all equipment and circuit requirements are compatible.\u003c\/li\u003e\n\u003cli\u003eBolt-in construction and mounting provide a specific physical configuration that should match the existing equipment.\u003c\/li\u003e\n\u003cli\u003eConfirm 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 KLLU1800\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Description:\u003c\/strong\u003e FUS 600V T\/D CLASS L 1800A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e KLLU\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Time-Delay Current-Limiting Fuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Current Rating:\u003c\/strong\u003e 1800A\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 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 300VDC\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\u003eSeries Time-Delay Characteristic:\u003c\/strong\u003e Minimum 10 seconds at 500% of rated current\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class:\u003c\/strong\u003e Class L\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 Bolt-In\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 Bolt-In\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 the KLLU Series as UL Listed and states that KLLU Series fuses meet or exceed UL requirements for Class L fuses. The supplied KLLU1800 information also confirms its Class L designation, current-limiting family style, time-delay opening characteristic, voltage ratings, interrupting ratings, and bolt-in construction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe KLLU1800 best matches electrical equipment designed for an 1800A Class L time-delay, current-limiting fuse with bolt-in mounting. The manufacturer specifically discusses the KLLU Series in connection with motor branch-circuit protection, and its minimum 10-second time delay at 500% of rating is intended to accommodate heavy starting currents associated with large motors and other inductive loads.\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":50459227717931,"sku":"KLLU1800","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459227750699,"sku":"KLLU1800  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/kllu1800","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}