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Allen Bradley 140U MCB 140U-H2C3-D12

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140U-H2C3-D12

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The 140U-H2C3-D12 from Allen Bradley is a molded case circuit breaker designed for precision and safety in electrical systems. This model features three poles and operates within a frequency range of 50 to 60 Hz, accommodating a rated current of 125 Amps.

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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-H2C3-D12

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-H2C3-D12
UPC611320842722
Weight2.44 lbs (1.11 kg)
Min. Frequency50 Hz
Max. Frequency60 Hz
Number of Poles3 Poles
Magnetic Trip Current1250 A
Thermal Trip Current125 A
Rated Current125 A
Frame TypeH Frame
Interrupting Rating @ 240 V35 kA
Interrupting Rating @ 480 V25 kA
Interrupting Rating @ 600/347 V18 kA
Installation Altitude1000 m
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The Allen Bradley 140U-H2C3-D12 is an H-frame molded case circuit breaker built to manage electrical demands. Designed to handle rated currents of 125 Amps, this breaker effectively balances performance and safety in operational conditions. Its function is optimized across frequencies between 50 and 60 Hz, ensuring versatility in various systems.

In terms of protective features, the breaker includes a magnetic trip current of 1250 Amps for immediate fault response, alongside a thermal trip current of 125 Amps for ongoing operational protection. This design enables prompt reactions to overload conditions while providing adequate current handling for day-to-day applications.

The interrupting capacities of the 140U-H2C3-D12 circuit breaker are notable. It can handle up to 35 kA at 240 V, 25 kA at 480 V, and 18 kA at 600/347 V. These interrupting ratings confirm its reliability under fault conditions, safeguarding connected equipment from potential electrical surges.

The circuit breaker is also rated for installation at altitudes of up to 1000 meters, allowing flexibility in various setting conditions. It’s an indispensable component for control and feeder circuit applications, ensuring that electrical systems maintain integrity under various loads.