Product Description
The Allen-Bradley 140G-G6S3-D12 is a manually operated, 3-pole, G-frame molded case circuit switch rated for 125 Amps with a 65kA interrupting capacity. Designed for manual connection/disconnection of downstream circuits in applications like motor isolation, machine isolation, and bus-tie isolation, it facilitates lockout/tagout procedures for safe operation and maintenance. Unlike circuit breakers, it doesn't offer automatic overcurrent or short circuit protection, requiring users to provide separate upstream protection. In the OFF position, it provides electrical isolation and shares the same size, lugs, accessories, and mechanical operation (ON/OFF toggle) as equivalent thermal-magnetic circuit breakers, making it suitable as a manually operated branch circuit isolator for panel board interventions.
Is Your Device Showing These Signs?
The Allen Bradley 140G-G6S3-D12 molded case circuit breaker commonly experiences issues such as nuisance tripping due to incorrect overload settings or thermal magnetic calibration drift. Failed shunt trip mechanisms and undervoltage release coils are frequent problems, preventing remote breaker operation. Contact erosion on the main circuit breaker poles causes increased resistance and heat generation, leading to premature failure. Inspect the operating mechanism for wear or damage, ensuring proper mechanical functionality and preventing breaker binding. Diagnose communication failures with the communication module, verifying proper Modbus or Ethernet connectivity for remote monitoring and control.
Technical specifications
The Allen-Bradley 140G-G6S3-D12 is a 125A, 3-pole manual circuit switch used for isolating downstream circuits (like motors or machines) for maintenance and lockout/tagout. It doesn't provide overcurrent protection like a circuit breaker, requiring separate upstream protection. It offers electrical isolation in the OFF position and is compatible in size and operation with similar circuit breakers, making it suitable for manual branch circuit isolation.
Our Repair Process for the
140G-G6S3-D12
Our repair process for the Allen Bradley 140G-G6S3-D12 molded case circuit breaker begins with a comprehensive inspection to identify nuisance tripping causes, including overload settings and thermal magnetic calibration drift. We meticulously test and replace failed shunt trip mechanisms and undervoltage release coils to restore remote operation capabilities. Contact erosion on the main circuit breaker poles is addressed through resurfacing or component replacement, mitigating resistance and heat generation. The operating mechanism undergoes thorough examination for wear, with necessary repairs or replacements performed to ensure proper mechanical functionality and prevent binding. Communication failures are diagnosed by verifying Modbus or Ethernet connectivity, with repairs executed to restore remote monitoring and control capabilities.
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