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Allen Bradley 140U MCB 140UE-M5X3

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140UE-M5X3

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The 140UE-M5X3 is a robust molded case circuit breaker offered by Allen Bradley. It is engineered to handle a substantial rated current of 800 amperes across three poles. This unit operates effectively with a maximum voltage rating of 690V AC, and caters to standard frequencies of 50 to 60 Hz, showcasing efficiency in power management.

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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-M5X3

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140UE-M5X3
Weight12.00 lbs (5.44 kg)
Rated Current800 A
Number of Poles3 Poles
Frame SizeM-Frame
Rated Operational Voltage690V AC
Minimum Frequency50 Hz
Maximum Frequency60 Hz
Rated Insulation Voltage1000 VAC
Interrupting Rating at 220/240V AC65 kA
Interrupting Rating at 380/415V AC50 kA
Interrupting Rating at 500V AC25 kA
Interrupting Rating at 690V AC20 kA
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Model 140UE-M5X3 from Allen Bradley is a molded case circuit breaker designed for high-capacity applications. With a rated current of 800 amperes, this device delivers exceptional performance. The design accommodates three poles, suited for various circuit configurations.

This circuit breaker supports a rated operational voltage of up to 690 volts AC and is effective within a frequency range of 50 Hz to 60 Hz. Electrical insulation is robust, rated at 1000 volts AC, which safeguards against voltage surges.

The interrupting ratings vary based on the operational voltages: it is capable of handling 65 kA at 220/240 volts AC, 50 kA at 380/415 volts AC, 25 kA at 500 volts AC, and 20 kA at 690 volts AC. These attributes contribute to the circuit breaker's reliability and make it suitable for protecting critical applications against overload and short-circuit conditions. Overall, the 140UE-M5X3 combines safety with robustness, ensuring it meets demanding electrical requirements.