Allen-Bradley 140M-C2E-B25 Motor Protection Circuit Breaker 2.5A 690V Overload &

Allen-Bradley 140M-C2E-B25 Motor Protection Circuit Breaker

The Allen-Bradley 140M-C2E-B25 is a three-phase thermal-magnetic motor protection circuit breaker designed to provide comprehensive protection for small motors. It combines adjustable thermal overload protection with fixed magnetic short-circuit protection, ensuring reliable operation and safeguarding motor circuits.

Key Features

• Adjustable Thermal Overload Protection: The device offers a thermal overload release current setting range of 1.6 to 2.5 A, allowing precise calibration to match specific motor requirements.
• Fixed Magnetic Short-Circuit Protection: Equipped with a magnetic release current of 33 A, it provides immediate response to short-circuit conditions, enhancing system safety.
• High Breaking Capacity: The circuit breaker boasts a rated short-circuit breaking capacity of 100 kA at 400 V AC, ensuring robust performance under fault conditions.
• Phase Loss Protection: Incorporates phase failure sensitivity to detect and respond to phase loss scenarios, preventing potential motor damage.
• Compact Design: With dimensions of 45 mm in width, 70 mm in depth, and 90 mm in height, it facilitates space-efficient installation.
• Easy Installation: Designed for quick mounting on standard 35 mm DIN rails, simplifying the setup process.
• Durable Construction: Built to withstand demanding industrial environments, ensuring long-term reliability.

Technical Specifications

• Rated Operational Current (Ie): 2.5 A
• Rated Operating Voltage: Up to 690 V per IEC standards
• Rated Operation Power at AC-3, 400 V: 0.75 kW
• Rated Operation Power at AC-3, 230 V: 0.37 kW
• Electrical Life Cycle: Up to 100,000 operations at maximum rated current
• Control Element: Turn button for manual operation
• Electrical Connection: Screw terminals for secure wiring
• Switching Frequency: Maximum of 25 operations per hour
• Trip Class: Class 10
• Rated Frequency: 50/60 Hz

Applications

The 140M-C2E-B25 is ideal for protecting small three-phase motors in various industrial applications, including:

• Conveyor systems
• Pumps
• Fans
• Compressors
• Other machinery requiring reliable motor protection

Its combination of thermal and magnetic protection ensures motors are safeguarded against overloads and short circuits, enhancing operational safety and equipment longevity.

Installation and Compatibility

The circuit breaker is designed for straightforward installation on standard 35 mm DIN rails, facilitating integration into existing control panels. It is compatible with Allen-Bradley’s 100-C contactor range, providing seamless coordination and enhanced motor protection.

Conclusion

The Allen-Bradley 140M-C2E-B25 Motor Protection Circuit Breaker offers a reliable and efficient solution for safeguarding small three-phase motors. Its adjustable thermal settings, fixed magnetic protection, and compact design make it a valuable component in industrial motor control applications.