{"product_id":"cooper-bussmann-frn-r-7-1-2-rk5-time-delay-fuse-7-5a","title":"Cooper Bussmann FRN-R-7-1\/2 RK5 Time Delay Fuse 7.5A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN FRN-R-7-1\/2 is a cartridge-style, time-delay fuse rated at 7.5 amps and classified under UL Class RK5. It features a dual-element design that tolerates harmless inrush currents while still providing reliable overcurrent protection for motor loads, transformers, and general-purpose branch circuits. The fuse body measures 2 inches in overall length and 14.3 mm in diameter, sized for standard RK5 fuse holders. Non-indicating construction means no built-in blown-fuse signal. This fuse is installed by licensed electricians working on industrial control panels, motor starters, and commercial distribution equipment.\u003c\/p\u003e\n\u003cp\u003eThe FRN-R-7-1\/2 is suited for residential, commercial, and light industrial electrical systems where time-delay protection is required on motor branch circuits or transformer primaries. Its dual-element construction handles motor starting inrush without nuisance opening, making it a standard choice for HVAC equipment disconnects, pump panels, and control circuit protection in fused disconnect switches and panel-mount fuse holders.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7.5-amp time-delay rating handles motor inrush without nuisance tripping\u003c\/li\u003e\n  \u003cli\u003eUL Class RK5 classification for consistent application in code-compliant installations\u003c\/li\u003e\n  \u003cli\u003eDual-element design provides both overload and short-circuit protection\u003c\/li\u003e\n  \u003cli\u003eNon-indicating body — no blown-fuse indicator\u003c\/li\u003e\n  \u003cli\u003eCE Certified and CSA Certified for North American and international compliance\u003c\/li\u003e\n  \u003cli\u003eCartridge form fits standard RK5 fuse holders and fused disconnects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for UL Class RK5 cartridge fuse applications. Compatible with standard RK5 fuse holders accepting a 2-inch by 14.3 mm cartridge fuse body.\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 electrical codes. Always de-energize and lock out the circuit before removing or inserting a fuse. Use a properly rated fuse puller when working with cartridge fuses — do not handle energized fuses bare-handed. Verify the replacement fuse class and ampere rating match the disconnect or panel label before restoring power.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\u003eAmperage\u003c\/strong\u003e: 7.5 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\u003eIndicating\u003c\/strong\u003e: Non-Indicating\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\u003eInterrupting Rating\u003c\/strong\u003e: 20 kA at DC 200 RMS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.06 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: UL Listed 248-12 Class RK5 Guide JDDZ File E4273; CSA C22.2 No. 248.12 Class 1422-02 File 53787; CE Certified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 39121605\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: FRN-R-7-1\/2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51720788705586,"sku":"FRN-R-7-1\/2","price":95.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/470f70b427c335e547e27360533ee0cb.jpg?v=1788569188","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-frn-r-7-1-2-rk5-time-delay-fuse-7-5a","provider":"Voomi Supply","version":"1.0","type":"link"}