{"product_id":"cooper-bussmann-frn-r-15-time-delay-cartridge-fuse-15a-250v","title":"Cooper Bussmann FRN-R-15 Time Delay Cartridge Fuse 15A 250V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN FRN-R-15 is a 15-amp, 250-volt Class RK5 time-delay cartridge fuse designed for motor circuit protection and general branch circuit overcurrent protection. Built on the Fusetron dual-element, time-delay platform, this fuse tolerates harmless motor inrush currents without nuisance opening while still responding quickly to sustained overloads and short-circuit faults. Licensed electricians and HVAC technicians install this fuse in disconnect switches, motor starters, and loadcenters wherever RK5-type fusible protection is specified. Each unit ships in a boxed package of 10.\u003c\/p\u003e\n\u003cp\u003eThe FRN-R-15 is a standard trade-stock fuse used in residential and light commercial HVAC disconnect boxes, condenser unit disconnects, and motor control panels. Its dual-element construction makes it suitable for circuits driving single-phase compressors, fan motors, pump motors, and other inductive loads that produce high starting currents. It is particularly common in applications where a standard fast-acting fuse would open on motor startup, causing unnecessary service calls.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e15-amp continuous current rating for motor and branch circuit protection\u003c\/li\u003e\n  \u003cli\u003e250-volt AC rating suitable for residential and light commercial service\u003c\/li\u003e\n  \u003cli\u003eDual-element, time-delay design tolerates motor inrush without nuisance tripping\u003c\/li\u003e\n  \u003cli\u003eClass RK5 rejection-style ferrule body prevents substitution of lower-rated fuse classes\u003c\/li\u003e\n  \u003cli\u003eFusetron time-delay platform provides reliable overload and short-circuit response\u003c\/li\u003e\n  \u003cli\u003eSold in a boxed pack of 10 for service van and shop stocking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement cartridge fuse for 250-volt Class RK5 fusible disconnect switches and motor circuit protection applications commonly found in residential and light commercial HVAC and electrical systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation must be performed by a licensed electrician or qualified HVAC technician in accordance with NEC Article 240 and local codes. Always open and lock out the disconnect switch and verify the circuit is de-energized before removing or inserting fuses. Use a fuse puller rated for the cartridge size — never pull an energized cartridge fuse by hand. Confirm the replacement fuse amperage, voltage, and class match the disconnect nameplate before closing the cover.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 15 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 250 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: Time Delay (Dual Element)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: RK5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForm Factor\u003c\/strong\u003e: Cartridge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10 per box\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 (per box)\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-15\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BUSSMANN","offers":[{"title":"Default Title","offer_id":51560850391346,"sku":"FRN-R-15","price":86.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ff49c0e6801eea5aa67c8b8279f6a052_36910759-4504-4d1d-b7a5-0b8475b12e82.jpg?v=1786458657","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-frn-r-15-time-delay-cartridge-fuse-15a-250v","provider":"Voomi Supply","version":"1.0","type":"link"}