{"product_id":"cooper-bussmann-lpn-rk-15sp-time-delay-fuse-15a-rk1","title":"Cooper Bussmann LPN-RK-15SP Time Delay Fuse 15A RK1","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN LPN-RK-15SP is a time delay cartridge fuse rated at 15 amps and classified as an RK1 fuse, designed to provide reliable overcurrent protection in demanding electrical systems. With an interrupting rating of 100 kA at DC and 300 kA at AC (RMS), it handles high fault currents safely. The fuse measures 2 inches in overall length and 14.3 mm in diameter, fitting standard fuse holders. It features a two-element construction that tolerates brief inrush currents without nuisance tripping, making it suitable for motor and transformer circuits. Licensed electricians and industrial maintenance technicians typically install this fuse.\u003c\/p\u003e\n\u003cp\u003eThis fuse is used in commercial and industrial electrical panels, motor control centers, and equipment protection circuits where a Class RK1 time delay fuse is specified. The two-element design absorbs temporary overloads while still responding quickly to sustained fault conditions. It mounts in a standard cartridge fuse holder and is appropriate for branch-circuit and feeder protection applications. Non-indicating construction means the fuse does not provide a visual blown indicator, so continuity testing is required during troubleshooting.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eRK1 class rating provides a high level of current limitation compared to standard fuse classes\u003c\/li\u003e\n  \u003cli\u003eTime delay construction tolerates motor inrush and transformer magnetizing currents\u003c\/li\u003e\n  \u003cli\u003eHigh interrupting capacity: 100 kA at DC and 300 kA at AC (RMS)\u003c\/li\u003e\n  \u003cli\u003eTwo-element design separates overload and short-circuit response functions\u003c\/li\u003e\n  \u003cli\u003eNon-indicating fuse body with cartridge form factor for standard holder mounting\u003c\/li\u003e\n  \u003cli\u003eCE Certified, CSA Certified, and UL Listed for broad code compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for Class RK1 time delay cartridge fuse applications requiring a 15-amp, 2-inch overall length cartridge fuse installed in a compatible cartridge fuse holder.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with applicable NEC requirements. Always de-energize and lock out the circuit before removing or installing a fuse. Confirm the fuse holder is rated for Class RK1 cartridges and matches the voltage and amperage requirements of the circuit. Because this is a non-indicating fuse, use a multimeter or continuity tester to verify fuse condition during service.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: RK1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 15 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 inches (50.8 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 14.3 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: 0.05 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: CE Certified, CSA C22.2 No. 248.12 Class 1422-02 File 53787, UL Listed Guide JDDZ File E4273\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: LPN-RK-15SP\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51704941871410,"sku":"LPN-RK-15SP","price":293.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/90f4f30bfaa476c97d01b9b4f40e8365.jpg?v=1788425896","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-lpn-rk-15sp-time-delay-fuse-15a-rk1","provider":"Voomi Supply","version":"1.0","type":"link"}