{"product_id":"cooper-bussmann-lpn-rk-12sp-rk1-time-delay-fuse-12a","title":"Cooper Bussmann LPN-RK-12SP RK1 Time Delay Fuse 12A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN LPN-RK-12SP is a Class RK1 cartridge time delay fuse rated at 12 amps for general-purpose overcurrent protection in industrial and commercial electrical systems. The dual-element, time delay design allows the fuse to withstand normal motor inrush currents without nuisance opening while still providing fast response to sustained overloads and short-circuit faults. The cartridge body measures 2 inches in overall length and 0.563 inches in diameter, fitting standard fuse holders designed for RK1-class fuses. This fuse is installed by licensed electricians in motor branch circuits, HVAC equipment, and other inductive load applications requiring Class RK1 protection.\u003c\/p\u003e\n\u003cp\u003eThe LPN-RK-12SP is suited for residential and light commercial applications where low-voltage AC or DC branch circuit protection is required. Typical installations include motor control panels, HVAC disconnect boxes, and equipment requiring Class RK1 fusible protection. The non-indicating design is standard for this product type. It mounts via a standard fuse holder compatible with RK1-class cartridge fuses. This fuse is sold individually with a minimum order quantity of 3 units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass RK1 dual-element time delay design handles motor inrush without nuisance tripping\u003c\/li\u003e\n  \u003cli\u003e12-amp rating for branch circuit and equipment protection\u003c\/li\u003e\n  \u003cli\u003eInterrupting capacity of 100 kA at DC and 300 kA at AC (RMS) for high fault-current environments\u003c\/li\u003e\n  \u003cli\u003eCompact cartridge body: 2 inches overall length, 0.563 inches diameter\u003c\/li\u003e\n  \u003cli\u003eNon-indicating fuse body with standard fuse holder mount type\u003c\/li\u003e\n  \u003cli\u003eCE Certified, CSA Certified (CSA C22.2 No. 248.12), and UL Listed (Guide JDDZ File E4273)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for Class RK1 cartridge fuse positions requiring a 12-amp, time delay, dual-element fuse in a standard fuse holder.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a qualified electrician in accordance with the NEC and applicable local codes. Always de-energize and lock out the circuit before removing or replacing a fuse. Verify the fuse holder is rated for Class RK1 cartridge fuses and confirm the replacement amperage matches the circuit protection requirements before installation. Do not substitute a different fuse class in a holder designed for RK1 fuses, as dimensional and interrupting-rating differences may create a safety hazard.\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\u003eFuse Type\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 12 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Timing\u003c\/strong\u003e: Time Delay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Elements\u003c\/strong\u003e: 2 (Dual Element)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Body Type\u003c\/strong\u003e: Cartridge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndicating\u003c\/strong\u003e: Non-Indicating\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupting Capacity (AC RMS)\u003c\/strong\u003e: 300 kA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupting Capacity (DC)\u003c\/strong\u003e: 100 kA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 inches (50.80 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 0.563 inches (14.30 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Fuse Holder\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  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 39121605\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1 per package (minimum order quantity: 3)\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-12SP\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51692454740274,"sku":"LPN-RK-12SP","price":109.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0199b19a5094567c0e0183bec36ec132.jpg?v=1788297740","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-lpn-rk-12sp-rk1-time-delay-fuse-12a","provider":"Voomi Supply","version":"1.0","type":"link"}