{"product_id":"cooper-bussmann-frn-r-20-cartridge-fuse-20a-250v","title":"Cooper Bussmann FRN-R-20 Cartridge Fuse 20A 250V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe COOPER BUSSMANN FRN-R-20 is a 20-amp, 250-volt Type FRN-R cartridge fuse featuring Fusetron dual-element time-delay technology. It is designed to protect motors, motor branch circuits, and other inductive loads from overloads and short circuits. The time-delay characteristic allows the fuse to ride through normal motor inrush current without nuisance opening, while still providing fast, reliable response to sustained overloads and fault conditions. Licensed electricians and HVAC technicians install this fuse in disconnect switches, control panels, and load centers serving motors and similar equipment.\u003c\/p\u003e\u003cp\u003eThis fuse is suited for residential and light commercial applications where motor protection is required. Typical uses include air conditioning equipment, refrigeration units, pump motors, and other single-phase inductive loads operating on 250-volt circuits or below. The FRN-R series is a Class RK5 fuse, meaning it fits standard rejection-style fuse holders designed to accept RK5-class fuses. Each unit is sold individually and is supplied boxed; the package quantity in the supplier data reflects a 10-unit pack configuration.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e20-amp continuous current rating with 250-volt AC maximum voltage\u003c\/li\u003e\n\u003cli\u003eDual-element, time-delay design tolerates motor inrush without nuisance blowing\u003c\/li\u003e\n\u003cli\u003eClass RK5 rejection-style cartridge form factor fits standard RK5 fuse holders\u003c\/li\u003e\n\u003cli\u003eProtects motors, motor branch circuits, and inductive control loads\u003c\/li\u003e\n\u003cli\u003eBoxed packaging helps protect fuse elements during storage and handling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation cartridge fuse for Class RK5 rejection-style fuse holders rated for 250 volts AC and 20 amps.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation must be performed by a qualified electrician in accordance with NFPA 70 (NEC) Article 240 and the equipment manufacturer's disconnect or panel specifications. Always de-energize and lock out the circuit before replacing a fuse. Verify the replacement fuse matches the circuit's required ampere rating and voltage class before insertion. Do not substitute a non-rejection fuse holder for a rejection-style holder, as this defeats the Class RK5 selectivity design.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmpere Rating\u003c\/strong\u003e: 20A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 250 volts AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: Type FRN-R Cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime Delay\u003c\/strong\u003e: Dual-element time delay (Fusetron)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: Class RK5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10 per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: EA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 5.5 pounds\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-20\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BUSSMANN","offers":[{"title":"Default Title","offer_id":51558226723122,"sku":"FRN-R-20","price":86.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ff49c0e6801eea5aa67c8b8279f6a052_a63ca93e-6e1a-4eab-8eeb-83684d82fd46.jpg?v=1786406601","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-frn-r-20-cartridge-fuse-20a-250v","provider":"Voomi Supply","version":"1.0","type":"link"}