{"product_id":"cooper-bussmann-lps-rk-100spi-rk1-time-delay-fuse-100a","title":"Cooper Bussmann LPS-RK-100SPI RK1 Time Delay Fuse 100A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe COOPER BUSSMANN LPS-RK-100SPI is a cartridge-style, time-delay fuse rated at 100 amps and classified as RK1. It is designed for general-purpose overcurrent protection in industrial and commercial electrical systems. The fuse features a dual-element construction that tolerates temporary motor inrush and transformer magnetizing currents without nuisance tripping, while still providing fast, reliable clearing of sustained overloads and short circuits. Interrupting capacity is rated at 100 kA at DC and 300 kA at AC (RMS). Overall length is 7-7\/8 inches. Licensed electricians and industrial maintenance technicians are the primary installers for this class of fuse.\u003c\/p\u003e\u003cp\u003eThis fuse is suited for use in motor branch circuits, feeder circuits, and service entrance applications where RK1-class protection is specified. Bolt-on mounting makes it compatible with fusible disconnect switches and panel assemblies designed for cartridge fuse elements. The indicating feature provides a visual signal when the fuse has opened, helping technicians identify blown elements quickly during troubleshooting. Applications span commercial HVAC equipment, pumping systems, compressors, and other motor-driven loads where time-delay characteristics are required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRK1 fuse class with dual-element, time-delay design for motor circuit protection\u003c\/li\u003e\n\u003cli\u003e100 amp continuous current rating\u003c\/li\u003e\n\u003cli\u003eHigh interrupting capacity: 100 kA at DC, 300 kA at AC (RMS)\u003c\/li\u003e\n\u003cli\u003eIndicating type — visual blown-fuse indicator for fast field diagnosis\u003c\/li\u003e\n\u003cli\u003eBolt-on mount compatible with standard cartridge fuse holders and disconnects\u003c\/li\u003e\n\u003cli\u003eCE Certified, CSA Certified (C22.2 No. 248.12), and UL Listed (Guide JDDZ File E4273)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-install RK1-class cartridge fuse for fusible disconnect switches and overcurrent protection assemblies requiring a 100-amp, time-delay, bolt-on cartridge fuse of 7-7\/8-inch overall length.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a qualified licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. Always de-energize and verify the circuit is at zero voltage using a calibrated meter before handling or replacing fuses. Use insulated fuse pullers rated for the voltage class of the installation when removing or seating cartridge fuses in a holder. Never replace a fuse with a unit of a different class, amperage, or interrupting rating than what the circuit was designed for.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 100 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 Capacity (DC)\u003c\/strong\u003e: 100 kA\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\u003eOverall Length\u003c\/strong\u003e: 7-7\/8 inches (200 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndicating\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\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\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: LPS-RK-100SPI\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51692700369202,"sku":"LPS-RK-100SPI","price":249.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7d0c6df1c1d7da4b97622704892ba3d1.jpg?v=1788301401","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-lps-rk-100spi-rk1-time-delay-fuse-100a","provider":"Voomi Supply","version":"1.0","type":"link"}