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Allen Bradley 140U MCB 140U-M6D3-D80

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140U-M6D3-D80

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The 140U-M6D3-D80 circuit breaker by Allen Bradley is a robust component that fits within the M-Frame size category. This device has a rated current capacity of 800 Amperes and is designed with three poles, making it suitable for various applications.

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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-M6D3-D80

ManufacturerAllen Bradley
Product TypeCircuit Breaker
Product Line140U MCB
Part Number140U-M6D3-D80
Weight32.00 lbs (14.51 kg)
Frame SizeM-Frame
Rated Current800 A
Number of Poles3
Trip Unit TypeThermal-Magnetic
Adjustable Magnetic Trip Range4000 … 8000 A
Termination TypeTerminal box lugs
Mounting TypePanel or chassis mount
Max. Storage Humidity80% (Non-Condensing)
Max. Operating Humidity80% (Non-Condensing)
Max. Altitude1000 MSL without derating
Min. Storage Temperature0 °C
Max. Storage Temperature40 °C
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The Allen Bradley 140U-M6D3-D80 serves as a circuit breaker designed for reliability and safety in electrical systems. It operates within the M-Frame size category and is rated for a maximum current of 800 A. With three poles, this breaker is suited for managing multi-phase systems.

The device incorporates a thermal-magnetic trip unit, which provides effective protection against overloads and short circuits. Its adjustable magnetic trip range spans from 4000 to 8000 Amperes, allowing for customization based on specific operational requirements. Termination is achieved through terminal box lugs, facilitating straightforward connection to power systems.

Installation options include both chassis and panel mount methods, offering flexibility for various setups. The 140U-M6D3-D80 is designed to operate under conditions with humidity levels up to 80% without condensation, maintaining performance reliability in challenging environments.

This circuit breaker can be stored within humidity limits of 80% as well. For altitudes, it can function effectively up to 1000 meters above sea level without derating its performance. Storage temperatures should be maintained between 0 °C and 40 °C to ensure the integrity and operability of the unit.