{"product_id":"cooper-bussmann-frs-r-125-125a-rk5-time-delay-fuse","title":"Cooper Bussmann FRS-R-125 125A RK5 Time Delay Fuse","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe COOPER BUSSMANN FRS-R-125 is a Class RK5 cartridge time delay fuse rated at 125 amps with an overall length of 9.625 inches. It features a dual-element design that tolerates harmless inrush currents while providing reliable overcurrent protection for branch circuits, motor loads, and general-purpose power distribution equipment. Bolt-on mounting simplifies installation in fusible disconnect switches and panelboards. This fuse is specified by licensed electricians and industrial maintenance technicians wherever RK5 class overcurrent protection is required by code or equipment design.\u003c\/p\u003e\u003cp\u003eThe FRS-R-125 is suited for residential, commercial, and light industrial applications where motor loads or transformer primaries demand time delay characteristics to avoid nuisance opening on startup surges. Its dual-element construction allows it to carry normal inrush current momentarily while still opening quickly on sustained overloads or short-circuit faults. It installs into standard Class RK5 fuseholders and disconnect switches rated for cartridge-style fuses.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eClass RK5 dual-element time delay design handles motor inrush without nuisance trips\u003c\/li\u003e\n\u003cli\u003e125-amp continuous current rating for branch circuit and motor circuit protection\u003c\/li\u003e\n\u003cli\u003e9.625-inch overall length fits standard RK5 cartridge fuseholders with bolt-on mounting\u003c\/li\u003e\n\u003cli\u003e20 kA interrupting rating at DC 200 V RMS for fault current protection\u003c\/li\u003e\n\u003cli\u003eCE Certified, CSA C22.2 No. 248.12 Certified, and UL Listed 248-12 Class RK5 (Guide JDDZ File E4273)\u003c\/li\u003e\n\u003cli\u003eGeneral-purpose fuse type suitable for a wide range of power distribution applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement for standard Class RK5 cartridge fuseholder applications requiring a 125-amp time delay fuse with a 9.625-inch overall length and bolt-on mount.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a qualified electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize and lock out the circuit at the disconnect or panelboard before removing or installing the fuse. Verify the fuseholder is rated for Class RK5 cartridge fuses and confirm the circuit voltage and amperage do not exceed the fuse ratings. Never replace a fuse with one of a higher ampere rating than the circuit is designed to carry.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: RK5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: General Purpose\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\u003eAmperage\u003c\/strong\u003e: 125 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating\u003c\/strong\u003e: 20 kA at DC 200 V RMS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 9.625 inches (244.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Elements\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.05 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 Certified; UL Listed 248-12 Class RK5 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: FRS-R-125\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":67988292403506,"sku":"FRS-R-125","price":882.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/27efbc79a046a92403746a97016dce82.jpg?v=1792290586","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-frs-r-125-125a-rk5-time-delay-fuse","provider":"Voomi Supply","version":"1.0","type":"link"}