Product Description
The Allen-Bradley 140U-K6D3-D17 MCCB is a 480V, 175A, 3-pole K-Frame circuit breaker with a 65kA interrupting rating, offering fixed thermal and adjustable magnetic protection. It accepts field- or factory-installed internal control modules like Auxiliary, Alarm, Shunt Trip, and Undervoltage Release contacts. Designed for use with a 141A mounting system via a standard busbar module with rear connecting studs, it's crucial to consult installation instructions before adding accessories. This compact circuit breaker, featuring an electronic trip unit up to 400A and a versatile operating mechanism, provides ground fault, overload, and short-circuit protection in applications like panelboards and switchboards. It boasts a mechanical lifespan of 20,000 operations and an electrical life (at 415VAC) of 5000-7000 operations, operating reliably up to 40C and storing safely between -40C and 80C.
Is Your Device Showing These Signs?
The Allen Bradley 140U-K6D3-D17 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 line and load side terminals cause connection failures and increased resistance. Internal component failures within the electronic trip unit result in communication errors and prevent proper protection. Routine inspection and replacement of worn or faulty breakers is required to maintain system uptime and prevent electrical faults.
Technical specifications
The Allen-Bradley 140U-K6D3-D17 MCCB is a compact, 480V, 175A, 3-pole circuit breaker with a 65kA interrupting rating. It offers fixed thermal and adjustable magnetic protection, accepts internal control modules, and is designed for use with a 141A mounting system. It provides ground fault, overload, and short-circuit protection, with a mechanical lifespan of 20,000 operations and an electrical life of 5000-7000 operations (at 415VAC). Installation instructions should be consulted before adding accessories.
Our Repair Process for the
140U-K6D3-D17
Our repair process for the Allen Bradley 140U-K6D3-D17 molded case circuit breaker begins with a comprehensive visual inspection for contact wear, terminal degradation, and any signs of physical damage. The breaker undergoes rigorous testing to identify nuisance tripping, thermal magnetic calibration drift, and communication errors stemming from the electronic trip unit. Faulty overload settings are corrected, and the thermal magnetic calibration is precisely adjusted to factory specifications. Worn or degraded line and load side terminals are replaced to ensure secure connections and minimize resistance. Internal component failures within the electronic trip unit are addressed through component-level repair or complete unit replacement. The repaired breaker is then subjected to final testing to verify proper operation and adherence to performance standards before being returned to service.
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