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Allen Bradley 140U MCB 140U-J2X3

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140U-J2X3

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The 140U-J2X3 by Allen Bradley is an efficient molded case circuit-breaker designed for three-phase systems. It is rated for 250 A current and operates effectively within a voltage range of 400 to 480 Volts AC, featuring a robust interrupting capacity of 25 Kiloamps.

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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-J2X3

ManufacturerAllen Bradley
Product TypeMolded Case Circuit-Breaker
Product Line140U MCB
Part Number140U-J2X3
UPC611320845303
Weight5.00 lbs (2.27 kg)
Current250 A
Voltage400/480 Volts AC
Phase3-Phase
Number of Poles3-Poles
FrameJ-Frame
Interrupting Rating25 Kiloamps
Operating MechanismManual toggle handle
Altitude2000 m
MountingPanel mounted
Rated Operational Voltage600 V AC
Frequency50/60 Hz
Operating Ambient Temperature−25 °C to +70 °C
Trip Unit TypeThermal-magnetic
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The Allen Bradley 140U-J2X3 is a molded case circuit breaker engineered for reliability in electrical systems. It supports a current rating of 250 A and can operate with input voltages from 400 to 480 volts AC. Designed specifically for three-phase applications, this circuit breaker is compliant with the J-Frame structure, making it suitable for panel mounting.

Its interrupting capacity stands at 25 Kiloamps, allowing it to efficiently handle fault conditions. The device utilizes a manual toggle handle for operation, ensuring simple utilization by the operator. This circuit breaker can be installed at altitudes of up to 2000 meters, accommodating various installation environments.

For enhanced versatility, the rated operational voltage of the 140U-J2X3 reaches up to 600 V AC. The product also operates effectively at frequencies of 50 to 60 Hz. The trip unit employs a thermal-magnetic design, providing reliable protection and operational overhead.

Regarding temperature tolerances, it can function within an ambient range from -25 °C to +70 °C, ensuring reliability across diverse operational settings. Overall, the 140U-J2X3 provides essential protective features, suitable for a variety of industrial applications.