Product Description
The Allen-Bradley 140U-KTD3-D35 is a 400A, three-pole, K-frame molded case circuit breaker (MCCB) from the 140U series, featuring a trip unit with fixed thermal and adjustable magnetic protection up to 3500A. It complies with UL 489, CE, CSA, IEC, and KEMA-KEUR standards and offers global approvals for universal applications. At 300A operational current, it has a fixed 300A thermal trip and an adjustable magnetic trip range of 1500-3000A, with interrupting ratings of 65kA at 380-480V, 35kA at 600V, and 13kA at 690V. It includes flex cable and rotary operating mechanisms, field-installable accessories, and offers electrical current ranges from 70-1200A with various time and fault setting options, a thermal-magnetic range of 15-800A, and a molded case switch range of 125-1200A.
Is Your Device Showing These Signs?
The Allen Bradley 140U-KTD3-D35 often presents issues related to thermal overloads, causing nuisance tripping due to incorrect FLA settings or ambient temperature fluctuations. Contamination within the MCC bucket or enclosure impacts performance, necessitating thorough cleaning and inspection of the device. Failure to properly torque terminal connections leads to resistive heating and potential damage to the motor protection circuit breaker. Routine testing and calibration are essential to ensure accurate current sensing and prevent premature equipment failure. Damaged or worn contacts require replacement to maintain proper circuit continuity and prevent arcing.
Technical specifications
The Allen-Bradley 140U-KTD3-D35 is a 400A, three-pole circuit breaker (MCCB) with fixed thermal and adjustable magnetic trip protection up to 3500A. It meets global standards and has interrupting ratings up to 65kA. It includes flex cable, rotary operating mechanisms, and supports field-installable accessories, offering a range of electrical current, thermal-magnetic, and molded case switch options.
Our Repair Process for the
140U-KTD3-D35
Our repair process for the Allen Bradley 140U-KTD3-D35 begins with a comprehensive inspection for thermal overload issues, addressing incorrect FLA settings and ambient temperature effects. Contamination is removed from the MCC bucket and the device is thoroughly cleaned. Terminal connections are tightened to the specified torque to eliminate resistive heating. The unit undergoes rigorous testing and calibration to guarantee precise current sensing. Any damaged or worn contacts are replaced to restore circuit continuity and prevent arcing.
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.