Product Description
The Allen-Bradley 140U-L6G3-D60 MCCB, a Size L, 3-pole, 600A breaker, switches electrical circuits on/off and offers adjustable tripping characteristics (long time, short time, ground fault) via its electronic trip unit. Accessories include flex cable operator, lugs, end cap kit, and rotary operator. It provides instantaneous short circuit protection and internal arc dissipation, offering thermal protection for feeder wires in industrial panels. UL and CSA listed, it tolerates motor inrush current without tripping, making it suitable for large power circuits, distribution systems, main control, and emergency stops. While maintenance-free, periodic inspection is recommended. The electronic trip unit is temperature-insensitive within -20 to 55C. It can serve as a manual disconnect switch, but avoid frequent short circuit interruptions. Ensure proper wiring connections.
Is Your Device Showing These Signs?
The Allen Bradley 140U-L6G3-D60 molded case circuit breaker commonly experiences issues such as nuisance tripping due to incorrect overload settings or thermal magnetic calibration drift. Field failures often stem from contact erosion caused by repetitive high fault current interruptions or improper torque on terminal connections, leading to increased resistance and thermal runaway. Internal component degradation, specifically within the solid-state trip unit, results in inaccurate current sensing and protection malfunctions. Replacement of the entire breaker is required when these faults occur.
Technical specifications
The Allen-Bradley 140U-L6G3-D60 MCCB is a 600A, 3-pole circuit breaker designed for industrial applications. It features an electronic trip unit with adjustable tripping characteristics for long time, short time, and ground fault protection. It offers instantaneous short circuit protection, internal arc dissipation, and thermal protection for feeder wires. Suitable for large power circuits, distribution systems, and emergency stops, it's UL and CSA listed and tolerates motor inrush current. While maintenance-free, periodic inspection is advised. The trip unit operates reliably between -20 and 55C. It can be used as a manual disconnect, but frequent short circuit interruptions should be avoided, and proper wiring is crucial. Available accessories include flex cable operator, lugs, end cap kit, and rotary operator.
Our Repair Process for the
140U-L6G3-D60
Our repair process for the Allen Bradley 140U-L6G3-D60 molded case circuit breaker begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the malfunction, whether it is nuisance tripping, contact erosion, or internal component degradation. This evaluation includes a thorough inspection of the breaker's overload settings, thermal magnetic calibration, terminal connections, and the solid-state trip unit. Upon confirmation of failure stemming from issues such as contact erosion, thermal runaway, or inaccurate current sensing, the breaker is deemed irreparable. The only course of action is a complete replacement of the Allen Bradley 140U-L6G3-D60 molded case circuit breaker with a new, fully calibrated unit to ensure proper circuit protection and operational reliability.
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.