Product Description
The Allen-Bradley 140G-M0H4-D60 circuit breaker is a robust, 800A, four-pole molded case circuit breaker with electronic LSI protection, designed for demanding electrical environments and complex circuits. It handles up to 600A, features a 1000V insulation voltage and 8kV impulse withstand, weighs 33.29 lbs, and offers a mechanical lifespan of 120 operations/hour and an electrical life of 60 operations/hour for reliable, long-term performance.
Is Your Device Showing These Signs?
The Allen Bradley 140G-M0H4-D60 molded case circuit breaker commonly experiences issues such as nuisance tripping due to incorrect overload settings or thermal magnetic calibration drift. Contact wear and degradation on the breaker's internal contacts lead to increased resistance and potential failure. The operating mechanism becomes stiff or inoperable due to accumulated debris and lack of lubrication. Field reports include failures of the shunt trip or undervoltage release accessories, preventing remote breaker operation. Replacement of the entire breaker is often required when these faults occur.
Technical specifications
The Allen-Bradley 140G-M0H4-D60 is a heavy-duty 800A, four-pole circuit breaker with electronic LSI protection, suitable for complex circuits. It can handle up to 600A, boasts high insulation and impulse withstand, weighs 33.29 lbs, and offers a long mechanical and electrical lifespan.
Our Repair Process for the
140G-M0H4-D60
Our repair process for the Allen Bradley 140G-M0H4-D60 molded case circuit breaker begins with a thorough inspection and diagnostic testing to pinpoint the root cause of the reported issue, such as nuisance tripping, contact degradation, or operational failure. The breaker is then disassembled, and each component is meticulously cleaned and inspected for wear, damage, or calibration drift. Worn or defective parts, including contacts, shunt trips, and undervoltage releases, are replaced with new, factory-certified components. The operating mechanism is cleaned, lubricated, and adjusted to ensure smooth and reliable operation. Following reassembly, the breaker undergoes rigorous testing to verify proper function, calibration, and adherence to original performance specifications. Finally, a detailed report outlining the repairs performed and test results is provided, ensuring the breaker is returned to its optimal operational state.
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.

















