Product Description
The Allen-Bradley 140G-MTI3-D60, a robust molded case circuit breaker from Rockwell Automation, offers reliable protection in high-load industrial applications with its 800A maximum rating, M-frame design, electronic LSIG technology for overload and short circuit protection, up to 600A current handling, 1000V insulation, 8kV impulse withstand, and durable construction for frequent operation.
Is Your Device Showing These Signs?
The Allen Bradley 140G-MTI3-D60 Molded Case Circuit Breaker commonly exhibits issues related to thermal-magnetic trip unit malfunction, causing nuisance tripping or failure to trip under fault conditions. We address problems with the internal components such as the operating mechanism, shunt trip, and auxiliary contacts, ensuring proper breaker operation and adherence to specified current ratings. Furthermore, we resolve issues with the breaker's insulation resistance, verifying dielectric strength to prevent electrical breakdown and ensure personnel safety. Calibration of the trip settings and verification of short-circuit protection are crucial aspects of our repair process.
Technical specifications
The Allen-Bradley 140G-MTI3-D60 is a heavy-duty circuit breaker designed for industrial use. It provides reliable protection against overloads and short circuits with its electronic LSIG technology, handles up to 600A current, and is built to withstand frequent operation in demanding environments. Key features include an 800A maximum rating, M-frame design, 1000V insulation, and 8kV impulse withstand.
Our Repair Process for the
140G-MTI3-D60
Our repair process for the Allen Bradley 140G-MTI3-D60 Molded Case Circuit Breaker begins with a thorough inspection to identify thermal-magnetic trip unit malfunctions, nuisance tripping, or failure to trip under fault conditions. We meticulously address problems with the operating mechanism, shunt trip, and auxiliary contacts, ensuring proper breaker operation and adherence to specified current ratings. We resolve insulation resistance issues, verifying dielectric strength to prevent electrical breakdown and ensure personnel safety. Calibration of the trip settings and verification of short-circuit protection are performed to guarantee optimal performance. The breaker undergoes rigorous testing to confirm it meets all required specifications before it is returned.
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