Allen-Bradley | 140MT-C3E-B63 | 140MT-C Series

Product Description: Allen-Bradley 140MT-C3E-B63

The Allen-Bradley 140MT-C3E-B63 is a robust motor protection circuit breaker with an electronic trip unit, rated for 63A. Designed as part of the compact 140MT-C series, it provides integrated overload and short-circuit protection for motors and motor circuits. The electronic trip unit offers precision, flexibility, and improved safety over traditional thermal-magnetic devices, making it ideal for high-current motor protection in industrial environments.

Key Features

• 63A rated operational current
• Electronic trip unit for precise overload protection
• Adjustable overload settings for application-specific tuning
• High breaking capacity ensures dependable short-circuit protection
• Compact C-frame design allows high-density panel installations
• Trip-free mechanism prevents failure under fault conditions
• Front-mounted ON/OFF toggle with status indication
• Compatible with a full range of modular accessories

Technical Specifications

• Frame Size: C-frame
• Trip Type: Electronic (adjustable overload protection)
• Rated Current (Ie): 63 A
• Rated Operational Voltage: Up to 690V AC (IEC), 480Y/277V AC (UL)
• Breaking Capacity: Up to 100 kA at 400V AC (with appropriate backup fuse)
• Trip Class: Typically Class 10
• Mounting Method: DIN rail or screw mount
• Operating Temperature: -25°C to +60°C
• Standards & Certifications: UL, CSA, CE, CCC, IEC/EN 60947-2 and 60947-4-1 compliant

Application Areas

• High-power motor circuits in industrial automation
• Pumps, compressors, conveyors, and heavy-duty HVAC systems
• Panel builders and OEM machinery
• Energy and utility sector installations
• Distributed motor control centers and MCCs

Advantages

• High-current handling in a compact form factor
• Electronic protection enhances precision and reduces nuisance trips
• Simplifies panel layout with integrated motor protection
• Wide accessory support enables customized solutions
• Reliable and certified for use in demanding industrial environments