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Allen Bradley 140G MCB 140G-J3C4-C50

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140G-J3C4-C50

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The 140G-J3C4-C50 is a molded case circuit breaker designed for effective circuit protection. It operates with a maximum current rating of 250 Amps and an interrupting capacity of up to 35 kA, making it suitable for various applications.

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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-J3C4-C50

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J3C4-C50
Weight10.00 lbs (4.54 kg)
FrameJ
Amps250
Interrupting Rating35 kA
Protection TypeFixed Thermal/ Fixed Magnetic
Poles4
Current Range50 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-J3C4-C50 is a robust molded case circuit breaker built for high performance in electrical systems. It is capable of managing 50 Amps of rated current and up to 250 Amps of maximum current to respond effectively in fault conditions. The device has an interrupting capacity of 35 kA, ensuring reliable protection against overloads and short circuits.

This breaker features a J frame construction and includes four poles for versatile installation options. Its rated insulation voltage is 1000 volts, enabling operation in high-voltage environments. Additionally, its rated impulse withstand voltage is 8 kV, further enhancing its durability under electrical surges.

At 7.72 lbs., the 140G-J3C4-C50 is suitable for various mounting configurations. It is engineered for mechanical longevity with a mechanical life rating of 240 operations per hour that supports frequent use. Additionally, the electrical life of the circuit breaker is rated at 120 operations per hour, making it a dependable choice for continuous operation in industrial settings.

Revision Part #Also known as
140G-J3C4-C50 Ser A140G-J3C4-C50/A, Series A, Rev A
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