Allen-Bradley 140MT-C3E-C16-KY Motor Protection Circuit Breaker (10-16A, 3-Pole)

Condition: NEW Surplus

The 140MT-C3E-C16-KY is a high-quality motor protective switching device (MPSD) from Rockwell Automation's Bulletin 140MT series. This C-Frame breaker combines adjustable thermal overload protection with fixed magnetic short-circuit protection, making it ideal for manual motor starting, group motor installations, and motor branch circuit protection in industrial applications.

Key Specifications:

• Part Number: 140MT-C3E-C16-KY
• Rated Current Range: Adjustable Thermal 10 - 16A
• Poles: 3-Pole
• Frame Size: C-Frame (up to 32A max)
• Trip Type: Adjustable Thermal / Fixed Magnetic (Standard at 14 x le)
• Trip Class: 10 (trips within 10 seconds at overload)
• Breaking Capacity: Standard (normal interrupt rating for typical applications)
• Knob/Actuator: Red/Yellow Lockable Twist Knob (for lockout/tagout safety)
• Voltage Rating: Up to 480V AC (suitable for 480V/60Hz systems; check full ratings for your application)
• Mounting: DIN Rail compatible
• Applications: Motor protection in control panels, machinery, conveyor systems, and automation setups requiring UL/CSA/IEC compliance

This compact device offers reliable phase loss sensitivity, visible trip indication, and easy integration with Allen-Bradley contactors (e.g., 100-C series) for DOL or reversing starters.

Why Choose the 140MT-C3E-C16-KY?

• Adjustable thermal range for precise motor matching.
• Fixed magnetic trip provides fast short-circuit protection.
• Red/yellow lockable knob enhances safety compliance.
• Proven Rockwell Automation durability for demanding environments.

Compatibility & Related Products:

• Pairs well with Bulletin 100-C contactors for Type 2 coordination.
• Often used in motor circuits up to ~7.5–10 HP at 480V (verify with motor FLA).
• Explore similar 140MT series for higher currents or high-break options.