{"product_id":"cooper-bussmann-mdq-1-2-cartridge-time-delay-fuse-0-5a","title":"Cooper Bussmann MDQ-1\/2 Cartridge Time Delay Fuse 0.5A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN MDQ-1\/2 is a mini cartridge time delay fuse rated at 0.5 amps. It features a glass body construction with dual elements and is designed to provide time-lag overcurrent protection in low-amperage control circuits. The time delay characteristic allows momentary inrush currents to pass without nuisance blowing, then interrupts sustained overloads before damage occurs. At 1.25 inches overall length and 0.25 inches in diameter, this fuse fits standard mini cartridge fuse holders used across HVAC control boards, small appliances, and electronic equipment. Installation is performed by qualified electricians and HVAC technicians working on low-voltage or signal-level circuits.\u003c\/p\u003e\n\u003cp\u003eThis fuse is suited for residential and light commercial applications where precise overcurrent protection at low amperages is required. Common install scenarios include HVAC control circuit protection, transformer secondary circuits, and electronic equipment panels. The 0.5 amp rating targets sensitive components that would be damaged by even moderate overcurrent events. The time delay design distinguishes it from fast-acting fuses where motor or transformer inrush currents would cause repeated failures.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTime delay (slow-blow) characteristic prevents nuisance blowing on inrush currents\u003c\/li\u003e\n  \u003cli\u003eGlass cartridge body allows visual inspection of fuse element condition\u003c\/li\u003e\n  \u003cli\u003eDual-element design for reliable time-delay response\u003c\/li\u003e\n  \u003cli\u003eCompact mini form factor: 1.25 inches OAL x 0.25 inches diameter\u003c\/li\u003e\n  \u003cli\u003eUL Listed under UL 248-14 and CSA Class 1422-01 Component Accepted\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement mini cartridge time delay fuse for use in standard 1\/4 inch diameter mini cartridge fuse holders in HVAC control circuits, electronic equipment panels, and similar low-amperage overcurrent protection applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis fuse should be installed by a licensed electrician or qualified HVAC technician. De-energize the circuit completely and verify zero voltage before removing or inserting the fuse. Always replace with a fuse of identical amperage rating and time delay classification — substituting a fast-acting or higher-rated fuse defeats the protection intent. Reference NEC Article 240 for general overcurrent device installation requirements.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Type\u003c\/strong\u003e: Mini Cartridge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 0.5 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Timing\u003c\/strong\u003e: Time Delay\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.25 inches (31.75 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBody Material\u003c\/strong\u003e: Glass\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Elements\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: UL Listed 248-14, UL Listed Guide JDYX File E19180, CSA Class 1422-01 Component Accepted\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: MDQ-1\/2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":51689361998130,"sku":"MDQ-1\/2","price":79.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c595383b725db8d23248b4c53e4f33aa.jpg?v=1788258266","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-mdq-1-2-cartridge-time-delay-fuse-0-5a","provider":"Voomi Supply","version":"1.0","type":"link"}