{"product_id":"cooper-bussmann-frn-r-8-rk5-time-delay-fuse-8a","title":"Cooper Bussmann FRN-R-8 RK5 Time Delay Fuse 8A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN FRN-R-8 is a Class RK5 cartridge time delay fuse rated at 8 amps, designed for general-purpose overcurrent protection in commercial and industrial electrical systems. The dual-element, time delay construction allows the fuse to withstand temporary inrush currents — such as those produced by motor starts — without nuisance opening, while still providing reliable short-circuit protection. At 2 inches overall length and 14.3 mm diameter, it installs into standard Class RK5 fuse holders. Licensed electricians and industrial maintenance technicians are the primary installers of this component.\u003c\/p\u003e\n\u003cp\u003eThis fuse is suited for use in motor branch circuits, control panel feeder circuits, and equipment requiring time delay overcurrent protection. The RK5 class rating makes it compatible with dual-element fuse holders commonly found in disconnect switches, motor control centers, and distribution panels in residential, commercial, and light industrial applications. Its non-indicating design provides no visible blown indication, so circuit testing is required during troubleshooting to confirm fuse status.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass RK5 dual-element time delay construction tolerates motor inrush without nuisance opening\u003c\/li\u003e\n  \u003cli\u003e8-amp rating for precise overcurrent protection in low-amperage branch circuits\u003c\/li\u003e\n  \u003cli\u003eNon-indicating body — no external blown indicator\u003c\/li\u003e\n  \u003cli\u003eCartridge body mounts in standard Class RK5 fuse holders\u003c\/li\u003e\n  \u003cli\u003eCE Certified, CSA C22.2 No. 248.12 Certified, and UL Listed 248-12 Class RK5\u003c\/li\u003e\n  \u003cli\u003e20 kA interrupting rating at DC 200 RMS for high fault-current environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement for Class RK5 cartridge fuse applications requiring an 8-amp time delay fuse in a standard 2-inch cartridge form factor.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with NEC requirements for overcurrent protection devices. De-energize and lock out the circuit before removing or installing any fuse. Confirm the fuse holder is rated for Class RK5 cartridge fuses before installation. Do not substitute a higher-amperage fuse or a different fuse class in place of this component.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 8 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: RK5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Timing\u003c\/strong\u003e: Time Delay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: General Purpose\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\u003eInterrupting Rating\u003c\/strong\u003e: 20 kA at DC 200 RMS\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: 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 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\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-8\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51689285714226,"sku":"FRN-R-8","price":233.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ee7dfee5807bb6c6230dc8b6f278a92d.jpg?v=1788256823","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-frn-r-8-rk5-time-delay-fuse-8a","provider":"Voomi Supply","version":"1.0","type":"link"}