{"product_id":"cooper-bussmann-lpj-45sp-class-j-time-delay-fuse-45a","title":"Cooper Bussmann LPJ-45SP Class J Time Delay Fuse 45A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe COOPER BUSSMANN LPJ-45SP is a Class J time delay cartridge fuse rated at 45 amps. It is designed for general-purpose overcurrent protection in industrial and commercial electrical systems. The dual-element, time delay construction allows it to tolerate brief inrush currents — common during motor starts and transformer energization — without nuisance tripping, while still responding quickly to sustained fault conditions. The fuse measures 2.375 inches in length and 27 millimeters in diameter, fitting standard Class J fuse holders. It carries a 300 kA interrupting rating at AC (RMS) and 100 kA at DC, providing robust short-circuit protection in demanding applications.\u003c\/p\u003e\u003cp\u003eThe LPJ-45SP is suited for residential, commercial, and light industrial electrical panels, motor control centers, and disconnect switches where Class J fusing is specified. Licensed electricians install this fuse in systems requiring high-interrupting-capacity overcurrent protection. It is commonly used in branch circuit and feeder applications where motor loads require time delay characteristics to prevent false tripping on startup inrush.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e45-amp Class J time delay rating for motor and transformer circuit protection\u003c\/li\u003e\n\u003cli\u003e300 kA interrupting rating at AC (RMS) for high-fault-current environments\u003c\/li\u003e\n\u003cli\u003e100 kA interrupting rating at DC\u003c\/li\u003e\n\u003cli\u003eDual-element design tolerates inrush currents without nuisance tripping\u003c\/li\u003e\n\u003cli\u003eNon-indicating cartridge body; mounts in standard Class J fuse holders\u003c\/li\u003e\n\u003cli\u003eUL Listed, CSA Certified, CE Certified, and RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard Class J fuse holders rated for 45-amp, 600-volt service. Consult fuse holder manufacturer specifications to confirm dimensional and electrical compatibility before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and replacement of this fuse should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). Always de-energize and lock out the circuit before removing or installing a fuse. Use an appropriately rated fuse puller when servicing fuses in live panel environments. Verify that the replacement fuse class, amperage, and voltage rating match the circuit requirements before energizing.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: J\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 45 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Timing\u003c\/strong\u003e: Time Delay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Body Type\u003c\/strong\u003e: Cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Elements\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating (AC RMS)\u003c\/strong\u003e: 300 kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating (DC)\u003c\/strong\u003e: 100 kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.375 inches (60.30 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 27.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Fuse Holder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicating\u003c\/strong\u003e: Non-Indicating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.18 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: UL Listed Guide JDDZ File E4273, CSA 22.2 No.248 Certified, CSA Class 1422-02 File 53787 Certified, CE Certified, RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: COOPER BUSSMANN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: LPJ-45SP\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51704201118002,"sku":"LPJ-45SP","price":1260.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/85baccadc730c46394f401a59692f167.jpg?v=1788421202","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-lpj-45sp-class-j-time-delay-fuse-45a","provider":"Voomi Supply","version":"1.0","type":"link"}