Product Description
The Allen-Bradley 140G-JTC3-C70 is a robust, high-performance 250A molded case circuit breaker with a 70A current range, fixed thermal-magnetic protection against overloads and short circuits, a durable JC frame, 1000V insulation voltage, and 8kV impulse withstand voltage, designed for reliable circuit management in demanding industrial and commercial environments with a mechanical life of 240 operations/hour and an electrical life of 120 operations/hour, all in a 5.51-pound package.
Is Your Device Showing These Signs?
The Allen Bradley 140G-JTC3-C70 molded case circuit breaker commonly exhibits issues such as nuisance tripping due to incorrect overload settings or thermal magnetic trip unit malfunction. Technicians frequently address problems with the operating mechanism, including handle binding or failure to latch, requiring inspection and lubrication or replacement of internal components. Furthermore, contact erosion from repeated arcing during interruption events reduces the breaker's interrupting capacity, necessitating contact refurbishment or complete breaker replacement. Field reports also indicate potential failures in the shunt trip or undervoltage release accessories, demanding thorough testing and component-level repair or module substitution.
Technical specifications
The Allen-Bradley 140G-JTC3-C70 is a durable 250A molded case circuit breaker (70A current range) offering fixed thermal-magnetic protection against overloads and short circuits. It features a JC frame, high insulation and impulse withstand voltage, and is designed for reliable circuit management in industrial/commercial settings with specified mechanical and electrical operating life. It weighs 5.51 pounds.
Our Repair Process for the
140G-JTC3-C70
Our repair process for the Allen Bradley 140G-JTC3-C70 molded case circuit breaker begins with a comprehensive evaluation to pinpoint the root cause of the malfunction, whether it be nuisance tripping, operating mechanism failure, contact erosion, or accessory failure. Technicians meticulously inspect overload settings and the thermal magnetic trip unit, addressing any discrepancies or malfunctions through recalibration or component replacement. The operating mechanism undergoes thorough examination, with binding issues resolved through lubrication or replacement of internal components, ensuring proper latching. Contact erosion is rectified via contact refurbishment or complete breaker replacement to restore interrupting capacity. Shunt trip and undervoltage release accessories are rigorously tested, and any failures are addressed through component-level repair or module substitution.
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