{"product_id":"jlls400","title":"JLLS400 - 400Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eJLLS400 - 400Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe JLLS400 is a 400-amp Class T fast-acting fuse for electrical equipment that requires a current-limiting fuse with high interrupting capacity. With ratings up to 600VAC and 300VDC, this fuse combines a 200 kA AC interrupting rating with a 20 kA interrupting rating at 300VDC. If you're replacing an existing JLLS400, don't rely on the 400A rating alone. Confirm the fuse class, AC or DC voltage, interrupting rating, opening characteristic, mounting arrangement, and equipment requirements before replacing it. Those details are what distinguish the correct 400A Class T fuse from another fuse that may look similar on paper.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e400A continuous current rating for equipment specified for a 400-amp fuse.\u003c\/li\u003e\n\u003cli\u003e600VAC maximum voltage rating for compatible AC electrical systems.\u003c\/li\u003e\n\u003cli\u003eRated up to 300VDC for properly specified DC applications.\u003c\/li\u003e\n\u003cli\u003eFast-acting (F) opening characteristic with no intentional time delay.\u003c\/li\u003e\n\u003cli\u003eClass T current-limiting design for applications requiring this fuse class and operating style.\u003c\/li\u003e\n\u003cli\u003eKnife-blade\/bolt-in construction provides the physical configuration specified for this model.\u003c\/li\u003e\n\u003cli\u003eNon-indicating design; the fuse does not include a built-in blown-fuse indicator.\u003c\/li\u003e\n\u003cli\u003eDesigned for installation in 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 JLLS400\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e JLLS\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Class T Fuse\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous Current Rating:\u003c\/strong\u003e 400A\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 kA at 600VAC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC 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 T\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\u003eSize \/ Construction:\u003c\/strong\u003e Knife-Blade \/ 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 Fuse Block \/ Clip \/ Holder\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecified Holder Series:\u003c\/strong\u003e LFT60400 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 specifications identify the JLLS400 as a Class T, fast-acting, current-limiting fuse and provide its principal electrical and mounting characteristics. However, the information supplied for this product does not specify material composition, RoHS compliance, or individual UL\/CSA certification or file numbers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe JLLS400 400A Class T fuse is best suited to electrical equipment engineered to use a 400A fast-acting Class T fuse rated up to 600VAC. Its 200 kA AC interrupting capacity is an important selection point when the equipment and electrical system require that level of interrupting capability.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIt can also be used in appropriately specified DC applications up to 300VDC, subject to its 20 kA DC interrupting rating and equipment requirements. The JLLS400's knife-blade\/bolt-in construction means physical compatibility matters just as much as the electrical numbers.\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":50459216806187,"sku":"JLLS400","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459216838955,"sku":"JLLS400  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/jlls400","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}