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Allen Bradley 140U MCB 140U-MTD3-D80

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140U-MTD3-D80

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The 140U-MTD3-D80 from Allen Bradley is a robust circuit breaker designed for demanding applications. It comes with a significant rated current of 800 A and provides efficient overload protection with a trip unit that utilizes fixed thermal–magnetic technology.

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Ships from Raleigh, NC
2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 140U-MTD3-D80

ManufacturerAllen Bradley
Product TypeCircuit Breaker
Product Line140U MCB
Part Number140U-MTD3-D80
Weight15.00 lbs (6.80 kg)
GTIN662072095263
Frame SizeM-Frame
Rated Current800 A
Interrupt Rating60…69 kA
Protection TypeT/M – Fixed Thermal
Number of Poles3
Material TypeMetal internal bus assembly
Trip Unit TypeThermal-Magnetic
Mounting TypePanel Mounting
Max. Operating Humidity80% (Non-Condensing)
Max. Altitude1000 MSL without derating
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The Allen Bradley 140U-MTD3-D80 circuit breaker is engineered for high-performance applications where reliable protection is essential. It is built with an M-Frame size providing a compact configuration while supporting a rated current of 800 A. The thermal-magnetic trip unit offers precise overload and short-circuit protection, categorized under the T/M protection type.

This device is equipped with three poles, allowing it to manage multi-phase circuits efficiently. Its interrupt rating, which ranges from 60 to 69 kA, indicates its capability to handle fault conditions effectively, thereby safeguarding connected equipment. The construction includes a metal internal bus assembly, enhancing the mechanical strength and reliability of the circuit breaker.

Designed for panel mounting, the 140U-MTD3-D80 is suitable for various installations that demand space efficiency. It can operate in environments with humidity levels up to 80% without condensation, making it adaptable to different climate conditions. Additionally, it can be utilized at altitudes of up to 1000 meters above sea level without experiencing any loss of performance, allowing for flexible installation in diverse locations. Overall, this circuit breaker delivers a combination of safety, efficiency, and durability in challenging industrial settings.