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Allen-Bradley 140G-G3C4-C40

SKU: 140G-G3C4-C40-SOB-USA

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All Parts Come with 12 Month Warranty

New, Surplus, and Refurbished Available

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Warranty Information

All products (new, surplus, and refurbished) are covered by Chief Automation's 1 Year Warranty. The Manufacturer's Warranty does NOT apply.

Shipping Information

We offer free standard shipping. Products located in the U.S. are eligible for expedited shipping, including next day air.

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Product Specifications

brand name Allen-Bradley
The Rockwell Automation Bulletin 140G Molded Case Circuit Breaker (MCCB) is a product designed for specific applications in industrial control panels, motors, and general industrial settings. The 140G-G3C4-C40 variant is a part of this product family, offering a range of technical specifications and features.

Technical Specifications

  • Frame Rating: The 140G-G3C4-C40 has a frame rating of 125A, which is suitable for applications that require a high level of current handling.
  • Interrupting Rating/Breaking Capacity: This MCCB has an interrupting rating of 35 kA at 480V, which indicates its ability to safely interrupt high currents and voltages.
  • Protection Type: The protection type is fixed thermal/fixed magnetic, which means that the circuit breaker is designed to respond to both thermal and magnetic overload conditions.
  • Number of Poles: The 140G-G3C4-C40 has four poles, making it suitable for applications that require multiple circuits to be controlled or monitored.
  • Continuous Rated Current: The continuous rated current for this MCCB is 40A, which is the maximum current it can handle continuously without overheating.

Alarm/Error Codes

The 140G-G3C4-C40 does not have specific alarm or error codes listed in the provided documentation. However, it is likely that the circuit breaker is designed to provide standard alarm and error signals based on its protection type and operating conditions. For detailed information on alarm and error codes, it is recommended to consult the user manual or contact Rockwell Automation support.

User Manuals

The user manual for the 140G-G3C4-C40 is not directly linked in our research. However, it can be accessed through the Rockwell Automation website or by contacting their support team directly.


Troubleshooting for the 140G-G3C4-C40 would typically involve identifying and addressing issues related to its operation, such as tripping due to overcurrent or overheating. This would involve checking the circuit breaker's settings, ensuring proper installation, and monitoring its performance. For detailed troubleshooting procedures, it is recommended to consult the user manual or contact Rockwell Automation support.


The 140G-G3C4-C40 is a standard MCCB and does not require programming. It operates based on its fixed thermal and magnetic trip settings, responding to overcurrent and overload conditions as designed.


The installation of the 140G-G3C4-C40 should follow standard practices for MCCBs, including ensuring proper mounting, wiring, and connection to the power supply. The circuit breaker should be installed in a location that allows for easy access and maintenance, and it should be connected to a suitable power supply that does not exceed its rated voltage and current. For detailed installation instructions, it is recommended to consult the user manual or contact Rockwell Automation support.

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