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Allen Bradley 140U MCB 140U-J2X3
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 our products come with DO Supply's 2-year warranty.
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140U-J2X3

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The 140U-J2X3 Molded Case Circuit Breaker is a high-performance compact breaker from Allen-Bradley/Rockwell Automation. It has a size J frame, 3 poles, and 250 Amps of frame current. The rated operational voltage of the breaker is 400/480 Volts AC and the interrupting rating is 25 Kiloamps.

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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 our products come with DO Supply's 2-year warranty.
Learn more
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Technical specifications for 140U-J2X3

BrandAllen-Bradley / Rockwell Automation
Series140U MCB
Part Number140U-J2X3
Product Description Molded Case Circuit Breaker
Frame Size J
Frame Rating 250 Amps
No. of Poles 3
Interrupting Rating 25 Kiloamps
Rated Operational Voltage 400/480 Volts AC
Frequency Rating 50/60 Hertz
Weight (approx.) 11.4 Pounds
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.

The 140U-J2X3 Molded Case Circuit Breaker (MCCB) is a high-performance compact breaker from Allen-Bradley/Rockwell Automation. It has a size J frame, 3 poles, and 250 Amps of frame current. The rated operational voltage of the breaker is 400 or 480 Volts AC and the current rating is 250 Amps. It comes with 25 Kiloamps of interrupting rating and it has 11.4 pounds of shipping weight. The 140U-J2X3 Molded Case Circuit Breaker provides thermal overcurrent protection and short circuit protection for industrial panel control applications. It can be used as a current limiting circuit breaker that operates faster than traditional UL 489 circuit breakers. The MCCB consists of a magnetic trip unit that can provide short circuit protection. As the short circuit current increases, it provides a faster interruption time.

This CSA listed 140U-J2X3 Molded Case Circuit Breaker features common accessories that allow for maximum flexibility. It has an arc chamber that performs several important functions to provide short circuit protection. The chamber surrounds the switching contacts to open it during a short circuit. During installation, make sure to avoid atmospheres with moisture or corrosive elements. This electromagnetic device provides the facilities to open a circuit manually and automatically under short circuit or overload conditions. It can be used as a branch short circuit device or branch protective device for a motor load. This 140U-J2X3 Circuit Breaker is suitable for energy-intensive systems such as commercial and industrial high power applications. It can be used in motor control applications to provide overload protection without being tripped during the inrush current. This molded case circuit breaker is suitable to use in electrical feeder circuits that provide power to large distribution boards.

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