A-B 140MT-D9T-C10 Motor Protection Circuit Breaker

A-B 140MT-D9T-C10 Motor Protection Circuit Breaker

The Allen-Bradley 140MT-D9T-C10 is a 140MT Series Motor Protection Circuit Breaker (MPCB) with an adjustable thermal range of 6.3–10 A and a fixed high magnetic trip. It is a D-frame, high-breaking-capacity device designed for motor overload and short-circuit protection. Rockwell specifies the magnetic trip at 18–22 × Ie.

Key Technical Specifications

Rockwell's current cut sheet identifies the standard 140MT-D9T-C10 as the 6.3–10 A high-magnetic-trip version; auxiliary-contact configurations are separate catalog variants.

Advantages & Features

• Adjustable 6.3–10 A thermal protection
• High magnetic trip for short-circuit protection
• Compact D-frame construction
• High breaking capacity
• Designed specifically for motor protection
• Suitable for combination motor controllers with compatible Allen-Bradley contactors
• Supports Type 1 and Type 2 combination motor-controller applications depending on the complete configuration.

Typical Applications

• Industrial motor control panels
• Motor starters
• Pumps and fans
• Conveyors
• Machine tools
• Material handling equipment
• Factory automation systems