Product Description
The Allen-Bradley 140G-G6C4-C40 is a dependable 125-amp, four-pole molded case circuit breaker (MCB) from the 140G series, offering essential electrical protection with a G-frame size. It supports a 40A current range and features fixed thermal (40A) and fixed magnetic (500A) trip protection. This robust breaker can interrupt faults up to 65kA, has an 800V insulation voltage, an 8kV impulse withstand voltage, and weighs 3.08 lbs, ensuring reliable performance and easy installation.
Is Your Device Showing These Signs?
The Allen Bradley 140G-G6C4-C40 molded case circuit breaker commonly experiences issues related to thermal overloads, causing nuisance tripping due to incorrect current settings or ambient temperature fluctuations. Mechanical failures within the operating mechanism, such as a jammed trip unit or damaged handle assembly, prevent proper breaker operation and require repair or replacement. Electrical contact degradation from arcing or corrosion increases resistance, leading to overheating and potential failure; inspect and clean contacts regularly. Communication faults in breakers equipped with communication modules disrupt network connectivity, hindering remote monitoring and control capabilities; verify network settings and module functionality.
Technical specifications
The Allen-Bradley 140G-G6C4-C40 is a reliable 125A, four-pole circuit breaker providing electrical protection. It has a G-frame size, supports a 40A current range, and offers fixed thermal (40A) and magnetic (500A) trip protection. It can interrupt faults up to 65kA and is designed for easy installation.
Our Repair Process for the
140G-G6C4-C40
Our repair process for the Allen Bradley 140G-G6C4-C40 molded case circuit breaker begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the malfunction, whether it stems from thermal overloads, mechanical failures, electrical contact degradation, or communication faults. Technicians meticulously inspect the breaker's components, including the trip unit, handle assembly, contacts, and communication module, using calibrated testing equipment to assess their condition and functionality. Based on the diagnostic findings, we perform necessary repairs, which include recalibrating current settings, repairing or replacing damaged mechanical components, cleaning or replacing degraded electrical contacts, and troubleshooting communication module issues. Following the repairs, the breaker undergoes rigorous testing to verify its performance and adherence to original specifications. The breaker is then returned with a detailed report outlining the repairs performed and the test results, ensuring reliable operation.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY