{"product_id":"allen-bradley-140ut-d7d3-b80","title":"140UT-D7D3-B80","description":"\u003ch2\u003eOverview of Allen Bradley 140UT-D7D3-B80\u003c\/h2\u003e\n\nThe Allen Bradley 140UT-D7D3-B80 is a molded case circuit breaker designed for comprehensive electrical protection in industrial control systems. This D-frame device provides reliable overcurrent and short-circuit protection with a rated current of 8 amperes across three poles. Built to UL 489 standards, the 140UT series delivers dependable performance in closed environments free from hazardous dust, explosive atmospheres, or corrosive gases. The breaker features fixed thermal and fixed magnetic trip characteristics, with thermal response calibrated at 15 to 20 times the nominal current rating. With a breaking capacity of 65 kA at 480Y\/277V AC, this circuit breaker handles demanding fault conditions while maintaining compact dimensions for space-efficient panel integration. The fixed mount configuration simplifies installation in motor control centers, distribution panels, and industrial machinery applications where precise current protection is critical for equipment longevity and operational safety.\n\n\u003ch2\u003eKey Features of Allen Bradley 140UT-D7D3-B80\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eThree-pole configuration rated for 8A nominal current\u003c\/li\u003e\n\u003cli\u003eBreaking capacity of 65 kA at 480Y\/277V AC\u003c\/li\u003e\n\u003cli\u003eFixed thermal trip response: 10 seconds at rated current\u003c\/li\u003e\n\u003cli\u003eFixed magnetic trip activation: 4 milliseconds\u003c\/li\u003e\n\u003cli\u003eMagnetic trip range: 15-20x nominal current (In)\u003c\/li\u003e\n\u003cli\u003eUL 489 certified molded case design\u003c\/li\u003e\n\u003cli\u003eD-frame construction for compact panel mounting\u003c\/li\u003e\n\u003cli\u003eCurrent limiting technology for enhanced protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specs of 140UT-D7D3-B80\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140UT-D7D3-B80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrame Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eD Frame (40A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePoles\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-pole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBreaking Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65 kA at 480Y\/277V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrip Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFixed Thermal \/ Fixed Magnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnetic Trip Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15-20x In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermal Trip Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnetic Trip Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 milliseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandard\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 489\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFixed mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications \/ Use Case\u003c\/h2\u003e\n\nThe Allen Bradley 140UT-D7D3-B80 circuit breaker serves critical protection roles in motor control centers, industrial machinery, distribution panels, and automation systems requiring precise 8-amp circuit protection. This three-pole device excels in applications where rapid fault detection is essential, with its 4-millisecond magnetic trip response preventing equipment damage during short-circuit conditions. Manufacturing facilities use this breaker to protect control circuits, small motors, and instrumentation panels. The 65 kA breaking capacity makes it suitable for high-fault-current installations typical in large industrial plants and commercial buildings. Control panel builders specify this model for switchgear assemblies where UL 489 compliance is mandatory. Process automation systems benefit from its reliable thermal protection, which prevents nuisance tripping while safeguarding connected loads. The D-frame construction fits standard panel cutouts, allowing straightforward integration into existing electrical infrastructure without modifications. Distribution systems operating at 480Y\/277V AC gain dependable branch circuit protection, while the fixed mount design ensures stable mechanical connection throughout the equipment lifecycle.\n\n\u003ch2\u003eRelated Resources\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/\" target=\"_blank\"\u003eLeadTime.ca – Industrial Automation Components \u0026amp; Repair Services\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/collections\/allen-bradley\" target=\"_blank\"\u003eView All Allen Bradley Products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/blogs\/learning-center\/examples-of-industrial-automation-control-systems\" target=\"_blank\"\u003eExamples of Industrial Automation and Control Systems\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-194e-sy\" target=\"_blank\"\u003eAllen Bradley 194E-SY Disconnect Switch\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-1609-d600n\" target=\"_blank\"\u003eAllen Bradley 1609-D600N UPS Backup Power Supply\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":47870765760811,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/4671\/7995\/files\/Leadtime_bd2fd06e-af45-4c2f-8540-88cf5519552b.png?v=1723532667","url":"https:\/\/leadtime.ca\/products\/allen-bradley-140ut-d7d3-b80","provider":"LEADTIME","version":"1.0","type":"link"}