{"product_id":"littelfuse-0jtd040-txid-class-j-time-delay-fuse-40a","title":"Littelfuse 0JTD040.TXID Class J Time Delay Fuse 40A","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe LITTELFUSE 0JTD040.TXID is a Class J time delay cartridge fuse rated at 40 amps, designed for general-purpose overcurrent protection in commercial and industrial electrical systems. Built with a melamine body, it measures 2-3\/8 inches in overall length and 1-1\/16 inches in diameter. The time delay characteristic allows brief inrush currents to pass without nuisance tripping, making it well-suited for motor and transformer circuits. It carries an interrupting rating of 20 kA at DC and 200\/300 kA at AC, providing robust fault current protection. This fuse is an indicating type, giving a visual signal upon operation to speed up troubleshooting and restore uptime quickly.\u003c\/p\u003e\n\u003cp\u003eThis fuse is intended for use in Class J fuse holders and fused disconnects found in commercial HVAC equipment, industrial control panels, motor branch circuits, and transformer protection applications. The Class J form factor provides a high-interrupting-rating solution in a compact footprint. Licensed electricians and controls technicians are the primary installers, typically in branch circuit and feeder applications where time delay characteristics are required to ride through normal startup loads without sacrificing fault protection.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eClass J cartridge form factor for use in standard Class J fuse holders and disconnects\u003c\/li\u003e\n  \u003cli\u003e40-amp time delay rating accommodates motor and transformer inrush currents\u003c\/li\u003e\n  \u003cli\u003eHigh interrupting rating: 20 kA at DC and 200\/300 kA at AC\u003c\/li\u003e\n  \u003cli\u003eMelamine fuse body for durability in demanding panel environments\u003c\/li\u003e\n  \u003cli\u003eIndicating design provides visual confirmation of fuse operation\u003c\/li\u003e\n  \u003cli\u003eListed to UL 248-8 and CSA File LR29862 for code-compliance in North American installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or new-installation fuse for Class J fuse holders and fused disconnect switches rated for 40-amp time delay fuses per UL 248-8.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize and lock out the circuit before removing or installing fuses. Verify that the fuse holder is rated for Class J fuses and that the circuit ampacity and voltage rating are compatible before installation. Never substitute a fuse of a different class or higher amperage rating as a replacement.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse Class\u003c\/strong\u003e: J\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 40 amps\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\u003eInterrupting Rating\u003c\/strong\u003e: 20 kA at DC, 200\/300 kA at AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-3\/8 inches (60.30 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Diameter\u003c\/strong\u003e: 1-1\/16 inches (27.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Melamine\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndicating\u003c\/strong\u003e: Yes\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 UL 248-8 (File E81895), CSA Certified (File LR29862)\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: LITTELFUSE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 0JTD040.TXID\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LITTELFUSE","offers":[{"title":"Default Title","offer_id":51541872935218,"sku":"0JTD040.TXID","price":349.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9d2217442fd7fcb5d3b0c7fd77e59beb_0ad66ce7-b123-458d-8f97-c5eda9fea79f.jpg?v=1785887301","url":"https:\/\/voomisupply.com\/products\/littelfuse-0jtd040-txid-class-j-time-delay-fuse-40a","provider":"Voomi Supply","version":"1.0","type":"link"}