{"product_id":"jlls300","title":"JLLS300 - 300Amp Fuse","description":"\u003cp\u003e\u003cstrong\u003eJLLS300 - 300Amp Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe JLLS300 is a 300-amp Class T fast-acting fuse designed for your electrical systems that require high interrupting capacity, current-limiting performance, and a compact Class T configuration. Rated for up to 600VAC and 300VDC, this fuse provides a 200 kA AC interrupting rating and a 20 kA interrupting rating at 300VDC. Whether you're replacing an existing JLLS300 or specifying protection for equipment designed around a 300A, 600V Class T fuse, the clearly defined electrical ratings make it easier to confirm compatibility before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e300A continuous current rating for electrical equipment designed around 300-amp Class T protection.\u003c\/li\u003e\n\u003cli\u003e600VAC maximum voltage rating supports compatible commercial and industrial AC applications.\u003c\/li\u003e\n\u003cli\u003eRated up to 300VDC for properly specified DC circuits.\u003c\/li\u003e\n\u003cli\u003eFast-acting (F) operation provides overcurrent protection without an intentional time delay.\u003c\/li\u003e\n\u003cli\u003eCurrent-limiting design helps limit fault-current energy during qualifying overcurrent conditions.\u003c\/li\u003e\n\u003cli\u003eClass T configuration combines high interrupting capacity with a space-efficient fuse format.\u003c\/li\u003e\n\u003cli\u003eKnife-blade\/bolt-in construction for use with compatible mounting hardware.\u003c\/li\u003e\n\u003cli\u003eNon-indicating design for applications where a visual blown-fuse indicator is not required.\u003c\/li\u003e\n\u003cli\u003eMounts using an appropriate fuse block, clip, or holder.\u003c\/li\u003e\n\u003cli\u003eLFT60400 Series is the specified holder family for the JLLS300.\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 JLLS300\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 300A\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 JLLS300 belongs to the JLLS family of Class T, fast-acting, current-limiting fuses. The supplied manufacturer specifications clearly identify its electrical ratings, fuse class, opening characteristic, mounting method, and interrupting capacities.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe JLLS300 300A Class T fuse is best suited to commercial and industrial electrical equipment specifically engineered for a 300-amp, fast-acting Class T fuse. Its 600VAC rating, current-limiting operation, compact Class T format, and 200 kA AC interrupting capacity make it suitable for compatible power distribution equipment, disconnects, electrical panels, industrial machinery, and other systems that require these electrical characteristics.\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":50459215757611,"sku":"JLLS300","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":50459215790379,"sku":"JLLS300  [R]","price":0.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/jlls300","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}