{"product_id":"cooper-bussmann-mdq-3-cartridge-time-delay-fuse-3a","title":"Cooper Bussmann MDQ-3 Cartridge Time Delay Fuse 3A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe COOPER BUSSMANN MDQ-3 is a miniature glass cartridge fuse with a time-delay characteristic, designed for circuit protection in low-current applications. Rated at 3 amps, it measures 1.25 inches overall length with a 0.25-inch diameter glass body. The two-element internal construction provides the intentional delay needed to ride through harmless inrush currents without nuisance opening, while still responding decisively to sustained overloads or fault conditions. Electricians and electronics technicians install this fuse in control panels, HVAC equipment, and light commercial systems requiring a compact, time-delay protective element.\u003c\/p\u003e\n\u003cp\u003eThe MDQ-3 fits standard miniature fuse holders and blocks that accept the 1\/4-inch diameter by 1.25-inch cartridge form factor. It is commonly used in residential and light commercial HVAC control circuits, small motor branch circuits, instrumentation panels, and appliance control boards where a time-delay fuse is specified. Applications requiring CSA or UL Listed protection in the mini cartridge size are typical installation scenarios for this fuse.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eTime-delay (slow-blow) characteristic handles normal inrush without nuisance tripping\u003c\/li\u003e\n  \u003cli\u003eTwo-element internal construction for reliable overload response\u003c\/li\u003e\n  \u003cli\u003eGlass body for quick visual inspection of fuse element condition\u003c\/li\u003e\n  \u003cli\u003eCompact mini cartridge profile: 1.25 inches OAL, 0.25 inches diameter\u003c\/li\u003e\n  \u003cli\u003eCSA Class 1422-01 Component Accepted and UL Listed 248-14 (Guide JDYX, File E19180)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard miniature cartridge fuse holders accepting a 1\/4-inch diameter by 1.25-inch time-delay fuse element, typical in residential and light commercial HVAC control circuits and instrumentation panels.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis fuse should be installed and replaced by a qualified electrician or HVAC technician in accordance with the NEC and applicable local codes. Always de-energize and lockout\/tagout the circuit before replacing a fuse. Confirm the replacement fuse amperage and time-delay rating match the equipment manufacturer's specification exactly. Do not substitute a fast-acting fuse where a time-delay type is required.\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: 3 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Timing\u003c\/strong\u003e: Time Delay\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\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\u003eWeight\u003c\/strong\u003e: 0.02 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: CSA Class 1422-01 Component Accepted, UL Listed 248-14, UL Listed Guide JDYX File E19180\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-3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"EATON","offers":[{"title":"Default Title","offer_id":67948970574130,"sku":"MDQ-3","price":47.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/78aefe066ceee1ad16fe53d9eeb34074.jpg?v=1791678458","url":"https:\/\/voomisupply.com\/products\/cooper-bussmann-mdq-3-cartridge-time-delay-fuse-3a","provider":"Voomi Supply","version":"1.0","type":"link"}