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

140U-J2X3

Need a Specific Revision?

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.

Call for an immediate quote

2 Year DO Supply Warranty

Available

Ships from Raleigh, NC

Learn more

Warranty

We sell industrial automation parts backed by our 2-year DO Supply Warranty.
Shipping

Same-day domestic and expedited international shipping with UPS, FedEx, DHL, and more.
Payment Methods

AMEX, Visa, MasterCard, Discover, wire transfer, and more, plus flexible payment plans.
Repairs & Exchanges

Repair and exchange services for all existing automation products.
Reseller Options

Drop shipping, blind shipping, and account shipping with no extra fees.

Technical specifications for 140U-J2X3

Brand	Allen-Bradley / Rockwell Automation
Series	140U MCB
Part Number	140U-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.

Request a Repair

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.