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Allen Bradley 140U MCB 140U-J3D3-D20

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140U-J3D3-D20

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The Allen Bradley 140U-J3D3-D20 is a 3-pole molded case circuit breaker designed to enhance electrical safety and control. It operates effectively at a current rating of 250 Amperes and can handle voltages up to 480 Volts AC. With an interrupting rating of 40/35 kA, this device is well-suited for a variety of high-demand applications.

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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-J3D3-D20

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140U MCB
Part Number140U-J3D3-D20
Weight6.00 lbs (2.72 kg)
UPC662072095338
Number of Poles3 Poles
StandardsUL, CSA, CE
Current250 Amperes
Interrupting Rating40/35 kA
Voltage480 Volts AC
Phase3 Phase
Frequency Rating50/60 Hz
Trip TypeThermal Magnetic
Terminal TypeBolt-on lug connections
Ambient Operating Temperature−25 °C to +60 °C
Pollution Degree RatingDegree 3
Storage Temperature−40 °C to +80 °C
Altitude2000 m
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The 140U-J3D3-D20 from Allen Bradley is a robust molded case circuit breaker that provides essential protection for electrical systems. With a current capacity of 250 Amperes and a voltage rating of 480 Volts AC, the device is designed to manage significant loads effectively. As a three-pole unit, it is built to support three-phase applications, making it suitable for a wide range of industrial settings.

This model boasts an interrupting capacity of 40/35 kA, which allows it to safely interrupt fault currents without compromising system integrity. The breaker is based on thermal magnetic trip technology, providing reliable performance under various fault conditions. Its terminal connections are bolt-on lugs, which facilitate secure installation and robust electrical contact.

Operating in temperatures ranging from −25 °C to +60 °C, the breaker is rated for use in diverse environments, while its pollution degree rating of 3 indicates suitability for areas with moderate contamination. Additionally, the unit can function within a storage temperature range of −40 °C to +80 °C for enhanced storage versatility. Designed for installations up to 2000 meters in altitude, the 140U-J3D3-D20 complies with UL, CSA, and CE standards, demonstrating its reliability and adherence to safety regulation requirements.