{"product_id":"cooper-bussmann-lpj-3sp-class-j-time-delay-fuse-3a","title":"Cooper Bussmann LPJ-3SP Class J Time Delay Fuse 3A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN LPJ-3SP is a Class J time-delay cartridge fuse rated at 3 amps, designed for general-purpose overcurrent protection in commercial and industrial electrical systems. Its dual-element, time-delay construction allows temporary inrush currents to pass without nuisance tripping, while still providing fast response to sustained fault conditions. The fuse body measures 2.25 inches in length and 20.6 mm in diameter, fitting standard Class J fuse holders. With an interrupting rating of 300 kA at AC (RMS) and 100 kA at DC, it handles high-fault-current environments where system integrity is critical. Licensed electricians and industrial maintenance technicians are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis fuse is suited for use in commercial HVAC equipment, motor control panels, power distribution boards, and other systems where Class J fusing is specified. The time-delay characteristic makes it a practical choice for protecting motor loads and transformer primaries that draw elevated inrush current on startup. Its compact cartridge form factor installs into any compatible Class J fuse holder without modification. Non-indicating design means the fuse does not provide a visual blown indicator, so continuity testing is required during troubleshooting to confirm fuse condition.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass J time-delay, dual-element construction tolerates motor inrush without nuisance tripping\u003c\/li\u003e\n  \u003cli\u003e300 kA interrupting rating at AC (RMS) and 100 kA at DC for high-fault-current protection\u003c\/li\u003e\n  \u003cli\u003e3-amp rating for low-current branch circuit and control circuit protection\u003c\/li\u003e\n  \u003cli\u003eCartridge body: 2.25 inches long, 20.6 mm diameter — fits standard Class J holders\u003c\/li\u003e\n  \u003cli\u003eNon-indicating fuse body; requires continuity test to confirm blown status\u003c\/li\u003e\n  \u003cli\u003eCE Certified, CSA Certified, UL Listed, and RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in Class J fuse holders accepting a cartridge fuse with a 20.6 mm diameter body and 2.25-inch overall length. Verify holder ampere rating and voltage rating before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a qualified electrician in accordance with applicable NEC requirements and local electrical codes. De-energize and lock out the circuit before removing or installing any fuse. Confirm that the replacement fuse amperage, voltage rating, and class match the panel or equipment specifications exactly. Do not substitute a standard fast-acting fuse where a time-delay Class J fuse is specified by the equipment manufacturer.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: J\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 3 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: 2.25 inches (57.20 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 20.60 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: 0.1 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: CE Certified; CSA 22.2 No.248 Certified; CSA Class 1422-02 File 53787 Certified; UL Listed Guide JDDZ File E4273; RoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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-3SP\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51699227984178,"sku":"LPJ-3SP","price":724.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/338f783ae8eec56cae13e4686f429863.jpg?v=1788373811","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-lpj-3sp-class-j-time-delay-fuse-3a","provider":"Voomi Supply","version":"1.0","type":"link"}