{"product_id":"cooper-bussmann-frn-r-70-rk5-time-delay-fuse-70a-250v","title":"Cooper Bussmann FRN-R-70 RK5 Time Delay Fuse 70A 250V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe COOPER BUSSMANN FRN-R-70 is a cartridge-style, time-delay fuse rated at 70 amps and 250 volts, classified as RK5 for general-purpose overcurrent protection. The dual-element design allows the fuse to tolerate harmless inrush currents from motors and transformers while still opening quickly on sustained overloads or short-circuit faults. With a 20 kA interrupting rating at DC 200 RMS, it provides reliable fault clearing in demanding service environments. Licensed electricians install this type of fuse in fusible disconnects, motor branch circuits, and distribution panels where RK5-class protection is specified.\u003c\/p\u003e\u003cp\u003eThis fuse is suited for residential and light commercial electrical systems where motor loads, HVAC equipment, or transformer circuits require time-delay overcurrent protection. The bolt-on mount type makes it compatible with standard RK5 fuse holders and disconnect blocks. Its cartridge body and 5.875-inch length fit fuse clips and holders designed for Class RK5 current-limiting fuses at 250 volts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e70-amp, 250-volt rating for motor and general-purpose branch circuit protection\u003c\/li\u003e\n\u003cli\u003eTime-delay (dual-element) construction tolerates motor inrush without nuisance opening\u003c\/li\u003e\n\u003cli\u003e20 kA interrupting rating at DC 200 RMS for reliable fault clearing\u003c\/li\u003e\n\u003cli\u003eRK5 current-limiting classification for code-compliant installations\u003c\/li\u003e\n\u003cli\u003eBolt-on mount type for secure seating in standard 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\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard Class RK5 fuse holders and fusible disconnect switches rated for 250-volt cartridge fuses. Confirm holder ampere and voltage ratings match before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Disconnect and lock out all power to the panel or disconnect before removing or installing fuses. Verify the fuse holder is rated for RK5 Class fuses at the appropriate voltage and amperage before insertion. Do not attempt to replace a blown fuse without first identifying and correcting the cause of the fault.\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\u003eAmperage\u003c\/strong\u003e: 70 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 250 volts\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\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\u003eMount Type\u003c\/strong\u003e: Bolt-On\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.875 inches (149.2 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 1.059 inches (26.9 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.32 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 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: FRN-R-70\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51691458855218,"sku":"FRN-R-70","price":362.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2ae04aa4b5b264ca878d7c831e77296a.jpg?v=1788285365","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-frn-r-70-rk5-time-delay-fuse-70a-250v","provider":"Voomi Supply","version":"1.0","type":"link"}