Product Description
The Allen-Bradley 140U-JD3D3-D10 is a 100-Amp, 3-pole molded case circuit breaker from the 140U product line, featuring a JD-type frame and a 30-39 kA interrupting rating. Equipped with a user-adjustable thermal-magnetic trip module for overcurrent protection, this breaker automatically opens a circuit under overload or short circuit conditions. The 140U line offers both electronic (70-1200A) and thermal-magnetic (15-800A) trip options; electronic trips provide advanced customization. Installation and maintenance should be performed by trained technicians.
Is Your Device Showing These Signs?
The Allen Bradley 140U-JD3D3-D10 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 are frequent, resulting in increased resistance and potential failure to interrupt fault current. The operating mechanism can become stiff or inoperable, preventing proper breaker actuation. Inspect for loose connections at the line and load terminals, as well as damage to the breaker enclosure impacting its IP rating and safety. Diagnose for potential issues with the shunt trip or undervoltage release functionality, ensuring proper operation during emergency shutdowns.
Technical specifications
The Allen-Bradley 140U-JD3D3-D10 is a 100A, 3-pole circuit breaker with a 30-39 kA interrupting rating. It uses a thermal-magnetic trip for overcurrent protection and is part of the 140U line, which includes both electronic and thermal-magnetic trip options. Installation and maintenance require trained technicians.
Our Repair Process for the
140U-JD3D3-D10
Our repair process for the Allen Bradley 140U-JD3D3-D10 molded case circuit breaker begins with a thorough inspection for loose connections at the line and load terminals, and any damage to the breaker enclosure. Diagnose the breaker for nuisance tripping, verifying overload settings and thermal magnetic calibration. Contact wear and degradation are assessed, measuring resistance to ensure proper fault current interruption capability. The operating mechanism is evaluated for stiffness or inoperability, and the shunt trip or undervoltage release functionality is tested to guarantee proper operation during emergency shutdowns. Any identified issues are addressed through component replacement, recalibration, and thorough testing to restore the breaker to its original operational specifications.
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.