{"product_id":"cooper-bussmann-fnq-4-cartridge-time-delay-fuse-4a-500v","title":"Cooper Bussmann FNQ-4 Cartridge Time Delay Fuse 4A 500V","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe COOPER BUSSMANN FNQ-4 is a cartridge-style, time-delay fuse rated at 4 amps and 500 volts AC with an interrupting capacity of 10 kA. The fuse body is constructed from fiber and features an orange color coding for quick visual identification. At 1.5 inches in overall length and 10.3 mm in diameter, it mounts into a standard fuse holder. Electricians and controls technicians install this fuse to protect low-amperage branch circuits and control panel wiring from overcurrent events. The time-delay characteristic allows brief inrush currents to pass without nuisance tripping while still responding quickly to sustained fault conditions.\u003c\/p\u003e\u003cp\u003eThe FNQ-4 is suited for general-purpose overcurrent protection in residential, commercial, and light industrial control circuits. Typical applications include motor control centers, HVAC equipment control wiring, transformer secondary protection, and other low-amperage panel configurations where a time-delay response is required. The fuse seats into a compatible fuse holder and is well suited for enclosed panel environments where space and amperage ratings are tightly managed.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTime-delay fuse action tolerates brief inrush without nuisance tripping\u003c\/li\u003e\n\u003cli\u003eRated 4 amps at 500 volts AC with 10 kA interrupting capacity\u003c\/li\u003e\n\u003cli\u003eFiber cartridge body construction for durability\u003c\/li\u003e\n\u003cli\u003eOrange color coding for fast visual amperage identification\u003c\/li\u003e\n\u003cli\u003eCE Certified, CSA Certified, UL Listed 248-14, and RoHS Compliant\u003c\/li\u003e\n\u003cli\u003eMounts into standard fuse holders for straightforward replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose cartridge fuse replacement for fuse holders accepting a 10.3 mm diameter, 1.5-inch cartridge fuse rated at 4 amps and 500 volts.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lock out the circuit before removing or inserting any fuse. Confirm the fuse holder is rated to accept a 10.3 mm diameter cartridge fuse at the required voltage and amperage before installation. Never replace a fuse with a higher-amperage unit to resolve nuisance tripping.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 4 amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 500 volts AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Capacity\u003c\/strong\u003e: 10 kA\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\u003eOverall Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 10.3 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Fuse Holder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Orange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: CE Certified, CSA C22.2 No.248.14 Class 1422-01 File 53787 HRC-MISC Certified, RoHS Compliant, UL Listed 248-14 Guide JDYX File E19180\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: FNQ-4\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51695717679410,"sku":"FNQ-4","price":424.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6dc68963b53a53f48daca5fde2c76dd1.jpg?v=1788337718","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-fnq-4-cartridge-time-delay-fuse-4a-500v","provider":"Voomi Supply","version":"1.0","type":"link"}