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Allen Bradley 140U MCB 140UE-M7D3-D40

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140UE-M7D3-D40

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The 140UE-M7D3-D40 is a molded case circuit breaker from Allen Bradley's 140U MCB series, rated for 800 amperes. It offers significant interrupting capabilities from 70 to 79 kA and features a three-pole configuration, making it suitable for industrial applications.

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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 140UE-M7D3-D40

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140UE-M7D3-D40
Weight20.00 lbs (9.07 kg)
Current Rating800 A
Interrupting Rating70 to 79 kA
Protection TypeFixed Thermal/Adjust Magnetic
Pole Configuration3 Poles
Minimum Operating Temperature-25°C
Maximum Operating Temperature60°C
Minimum Storage Temperature-40°C
Maximum Storage Temperature80°C
Installation Altitude1000 m
Minimum Relative Humidity5% (non-condensing)
Maximum Relative Humidity95% (non-condensing)
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The Allen Bradley 140UE-M7D3-D40 is engineered as a molded case circuit breaker, designed for a maximum current rating of 800 A. This device displays substantial interrupting ratings that range from 70 kA to 79 kA, allowing it to effectively manage high fault currents. Constructed with three poles, this circuit breaker ensures versatile configurations for different electrical setups.

The unit operates within a temperature range of -25°C to 60°C, making it suitable for diverse environments while ensuring reliability under varying conditions. When stored, it can withstand temperatures from -40°C to as high as 80°C, further enhancing its robustness. The installation altitude is limited to 1000 meters, which must be adhered to prevent performance degradation.

Designed for normal operation, this equipment can function in settings with relative humidity levels from 5% to as high as 95%, provided that the conditions remain non-condensing. With fixed thermal and adjustable magnetic protection types, the 140UE-M7D3-D40 circuit breaker provides both safety and adaptability for different operational requirements.