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Allen Bradley 140G MCB 140G-J2F4-D12

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140G-J2F4-D12

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The 140G-J2F4-D12 is a robust molded-case circuit breaker from Allen-Bradley. It features sophisticated protection mechanisms tailored to meet the demands of different electrical systems. It is designed to handle 120 Amps of current and a peak current of 250 Amps. It delivers dependable operation with an interrupting rating of 25 kA.

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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 140G-J2F4-D12

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J2F4-D12
Weight10.00 lbs (4.54 kg)
FrameJ
Amps250
Interrupting Rating25 kA
Protection TypeAdjust Thermal/ Adjust Magnetic
Poles4
Current Range120 A
Rated Insulation Voltage1000V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The Allen-Bradley 140G-J2F4-D12 is an advanced molded case circuit breaker designed for high-performance applications. It has a J frame and can manage a high current capacity of 250 Amps in addition to 120 Amps of rated current. The breaker is built to handle fault conditions effectively, and its interrupting rating is 25 kA. This breaker ensures system safety during overload or short-circuit conditions.

Additionally, it incorporates adjustable thermal and adjustable magnetic protection mechanisms, allowing users to tailor the protection settings to their specific application requirements.

With a rated insulation voltage of 1000 volts, the 140G-J2F4-D12 is suitable for high-voltage environments. Additionally, its rated impulse withstand voltage of 8 kV enhances its capability to endure transient electrical spikes. At 7.72 lbs., it is a sturdy device that promotes straightforward installation and configuration.

This circuit breaker is engineered for durability. Its mechanical life is rated at 240 operations per hour, and its electrical life is 120 operations per hour, ensuring consistent performance over time. The 140G-J2F4-D12's robust specifications make it an essential component in electrical distribution systems requiring reliable circuit interruption and protection.

Revision Part #Also known as
140G-J2F4-D12 Ser A140G-J2F4-D12/A, Series A, Rev A
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