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Product Description
The Allen-Bradley 140M-D8E-C16 is a black, 3-pole, D-frame motor protection circuit breaker, certified to CE, CCC, and cULus standards and compliant with UL 508, CSA C22, and IEC/EN 60947. It's rated up to 600V AC, 16 Amps (adjustable from 10-16 Amps), with a 208 Amp magnetic trip current, and short circuit ratings of 100kA at 400V and 65kA at 480V (group motor). It offers short circuit, overload, and magnetic trip protection (high, standard, or magnetic only), and supports 3-phase operation with power ratings up to 15 HP at 575V AC, 10 HP at 460V AC, and 5 HP at 200/230V AC, or 13 kW at 690V AC, 10 kW at 500V AC, 7.5 kW at 400/415V AC, and 4 kW at 230V AC; a maximum fuse size of 450 Amps is recommended. Accessories include an external rotary operator, auxiliary contacts, and trip indication contacts.
Is Your Device Showing These Signs?
The Allen Bradley 140M-D8E-C16 motor protection circuit breaker commonly experiences issues such as nuisance tripping due to incorrect overload settings or inrush current miscalculation. Contact wear from frequent starts/stops degrades performance, necessitating contact replacement. Calibration drift affects accurate current sensing, requiring recalibration or replacement of the thermal-magnetic trip unit. Handle mechanisms can fail, preventing proper operation and requiring handle or entire breaker replacement. Auxiliary contact malfunction disrupts remote monitoring and control, demanding contact repair or replacement.
Technical specifications
The Allen-Bradley 140M-D8E-C16 is a 3-pole motor protection circuit breaker (16A, adjustable 10-16A) with multiple certifications and compliances. It offers short circuit, overload, and magnetic trip protection, supports 3-phase operation up to 15 HP (575V AC), and has short circuit ratings of 100kA at 400V and 65kA at 480V. Accessories are available.
Our Repair Process for the
140M-D8E-C16
Our repair process for the Allen Bradley 140M-D8E-C16 motor protection circuit breaker begins with a thorough inspection to diagnose the specific fault, including verification of overload settings, contact condition assessment, calibration accuracy testing, handle mechanism functionality check, and auxiliary contact operation verification. Identified issues such as nuisance tripping, contact wear, calibration drift, handle failure, or auxiliary contact malfunction are addressed through specific actions. Incorrect overload settings are corrected, worn contacts are replaced, the thermal-magnetic trip unit is recalibrated or replaced to correct calibration drift, faulty handle mechanisms are repaired or replaced, and malfunctioning auxiliary contacts are repaired or replaced. Following component replacement or adjustment, the breaker undergoes rigorous testing to confirm proper operation and adherence to original performance specifications, ensuring reliable motor protection.
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