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Allen Bradley 140G MCB 140G-J3C4-C70

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140G-J3C4-C70

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The 140G-J3C4-C70 breaker model from Allen-Bradley is a molded case circuit breaker. This unit features a robust maximum current capacity of 250 Amps and is built with a J-frame. It has 4 poles and supports a variety of applications requiring reliable circuit protection.

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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-C70

ManufacturerAllen Bradley
Product TypeMolded Case Circuit Breaker
Product Line140G MCB
Part Number140G-J3C4-C70
Weight10.00 lbs (4.54 kg)
FrameJ
Amps250
Interrupting Rating35 kA
Protection TypeFixed Thermal/ Fixed Magnetic
Poles4
Current Range70 A
Rated Insulation Voltage1000 V
Rated Impulse Withstand Voltage8 kV
Mechanical Life240 Operations/hr.
Electrical Life120 Operations/hr.
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The Allen-Bradley 140G-J3C4-C70 is a molded case circuit breaker that can manage high electrical loads. It boasts a type J frame type, allowing for efficient electrical management in various applications. With a rated current of 70 Amps and a maximum current of 250 Amps, it handles substantial current loads effectively.

The device incorporates four poles, making it suitable for multi-phase electrical systems. Its interrupting rating is 35 kA, ensuring reliable disconnections during fault conditions. Additionally, the 140G-J3C4-C70 features fixed thermal and fixed magnetic protection technology to protect connected devices from overloading and short-circuits.

This circuit breaker is compatible with many feeder and control circuits. It guarantees operational safety with an insulation voltage capacity of up to 1000 V. Additionally, it protects against transient voltages with a rated impulse withstand capacity of 8 kV.

Weighing 7.72 pounds, the breaker is designed for both durability and functionality. Its mechanical life is rated at 240 operations per hour, while its electrical life is rated at 120 operations per hour. This ensures that it can withstand high-frequency switching while maintaining performance. Overall, the Allen-Bradley 140G-J3C4-C70 is a reliable choice for robust electrical protection and management.

Revision Part #Also known as
140G-J3C4-C70 Ser A140G-J3C4-C70/A, Series A, Rev A
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