{"product_id":"kllu601","title":"KLLU601 - 601 Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eKLLU601 - 601 Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe KLLU601 is a 601A Class L time-delay fuse built for electrical equipment that requires high-current protection, current-limiting performance, and a bolt-in connection. Its current-limiting characteristics are designed to reduce short-circuit damage to electrical systems and equipment. The manufacturer also identifies the KLLU Series as UL Listed and meeting or exceeding UL requirements for Class L fuses. If you're replacing an existing KLLU601, don't stop at matching the 601A rating—confirm the Class L requirement, AC or DC voltage, available fault current, time-delay characteristics, and bolt-in mounting before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e601A continuous current rating for systems specifically designed around a 601-amp Class L fuse.\u003c\/li\u003e\n\u003cli\u003eThe Class L fuse configuration narrows the compatibility check when replacing or specifying a fuse.\u003c\/li\u003e\n\u003cli\u003eTime-delay operation is intended to accommodate temporary starting currents rather than reacting unnecessarily to normal startup conditions.\u003c\/li\u003e\n\u003cli\u003eThe manufacturer specifies a minimum 10-second time delay at 500% of rated current, particularly relevant to large motors and other inductive loads.\u003c\/li\u003e\n\u003cli\u003eCurrent-limiting performance is designed to reduce short-circuit damage to systems and connected equipment.\u003c\/li\u003e\n\u003cli\u003eRated for operation up to 600VAC.\u003c\/li\u003e\n\u003cli\u003eAlso rated for systems up to 300VDC, provided the remaining application requirements are satisfied.\u003c\/li\u003e\n\u003cli\u003eBolt-in construction and mounting provide a clearly defined physical format to check against the existing installation.\u003c\/li\u003e\n\u003cli\u003eNon-indicating design for equipment requiring a standard non-indicating Class L 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 KLLU601\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Description:\u003c\/strong\u003e FUS 600V T\/D CLASS L 601A\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 601A\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\u003eSpecified Time Delay:\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 these time-delay Class L fuses meet or exceed UL requirements for Class L fuses. The supplied specifications identify the KLLU601 as a 601A, current-limiting, time-delay Class L fuse with 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 KLLU601 601A Class L fuse best matches electrical equipment that requires a 601A, time-delay, current-limiting Class L fuse with bolt-in mounting. The manufacturer identifies motor branch-circuit protection as an application for KLLU fuses and states that they may be sized close to motor full-load current when properly applied. The minimum 10-second time delay at 500% of rating is intended to help accommodate the heavy starting currents encountered with large motors and other inductive loads. In contrast, the current-limiting design is intended to reduce short-circuit damage.\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":50459228111147,"sku":"KLLU601","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459228143915,"sku":"KLLU601  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/kllu601","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}