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Product Description
The Allen-Bradley 140G-K6F3-D40-MU is a 400A, 3-pole molded case circuit breaker (MCCB) with a 65kA interrupting rating. It features adjustable thermal (280-400A) and magnetic (2000-4000A) trip settings via front-mounted knobs, and includes a factory-supplied universal busbar adapter for top or bottom mounting. Terminal lugs are ordered separately. Like other K-frame MCCBs, it accepts accessories like auxiliary contacts, undervoltage trips, trip contact blocks, and shunt trips. Working on busbar-mounted components like this MCCB requires specialized training and should only be performed by qualified electrical technicians due to the risk of arc flash and residual heat, even after de-energization. This MCCB can be used for lockout/tagout procedures.
Is Your Device Showing These Signs?
The Allen Bradley 140G-K6F3-D40-MU molded case circuit breaker commonly experiences issues such as nuisance tripping due to incorrect overload settings or thermal magnetic trip unit malfunction. Other frequent problems include failure to reset after a fault, often caused by a damaged operating mechanism or internal component failure within the breaker assembly. Furthermore, expect issues with the breaker's inability to carry its rated current, stemming from contact degradation, loose connections, or internal short circuits, necessitating thorough inspection and potential replacement of the affected components.
Technical specifications
The Allen-Bradley 140G-K6F3-D40-MU is a 400A, 3-pole MCCB with a 65kA interrupting rating. It has adjustable thermal and magnetic trip settings, a universal busbar adapter, and accepts various accessories. Working on it requires specialized training due to safety hazards like arc flash and residual heat, and it's suitable for lockout/tagout procedures. Terminal lugs are purchased separately.
Our Repair Process for the
140G-K6F3-D40-MU
Our repair process for the Allen Bradley 140G-K6F3-D40-MU molded case circuit breaker begins with a comprehensive inspection to diagnose the specific fault, focusing on common issues such as nuisance tripping, reset failures, and inability to carry rated current. This involves verifying overload settings, assessing the thermal magnetic trip unit, and examining the operating mechanism for damage. We then proceed with targeted repairs, which include replacing faulty components, addressing contact degradation, tightening loose connections, and resolving any internal short circuits. Following the repair, the breaker undergoes rigorous testing to ensure it meets original performance specifications and operates reliably under various load conditions. The breaker is returned to service only after successful completion of all tests, guaranteeing proper functionality and adherence to safety standards.
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