Schneider Electric (Barber Colman) MA-418 Actuator

The Schneider Electric (Barber Colman) MA-418 is a high-torque two-position actuator engineered for reliable operation of dampers, valves, and specialized HVAC equipment. Operating on 120V power, this unit delivers 60 lb-in torque and features a robust spring return mechanism to ensure failsafe positioning during power interruptions. For optimal performance and longevity, the output shaft must be horizontal for mounting, preventing premature gear wear and ensuring proper lubricant distribution within the housing. This heavy-duty actuator draws 70 watts during active travel and maintains set positions with an efficient 25-watt holding consumption, making it a staple for commercial building automation systems.

Field technicians frequently utilize the MA-418 actuator as a direct replacement for legacy components, as it is functionally identical to the EA-12, EA12, MA-408, MA-415, and MC-251. Whether you are servicing a Barber Colman MA-418-0-0-4 or another variant in the 418 series, this unit provides the necessary mechanical force to handle high-static pressure applications. Its compatibility with various two-position control signals allows for seamless integration into existing terminal equipment and air handling unit (AHU) setups.

• High Torque Output: Provides 60 lb-in of force, sufficient for larger damper assemblies and heavy-linkage valve configurations.
• Standardized Power Supply: Operates on common 120VAC electrical systems, simplifying site wiring for contractors.
• Broad Cross-Compatibility: Directly replaces multiple Schneider Electric and Barber Colman part numbers including the MA-418-0-0-2 and MA-418-004.
• Failsafe Security: Internal spring return ensures the controlled device moves to its normal position immediately upon loss of power.

Common Questions

Can the MA-418 be mounted vertically?
No. To prevent internal mechanical failure and maintain the integrity of the drive train, the output shaft must be oriented horizontally.

Is this a direct replacement for the EA-12 series?
Yes, the MA-418 is the current technical equivalent for the legacy EA-12 and MA-415 actuators, utilizing similar mounting footprints and electrical requirements.

What is the difference between running and holding wattage for this unit?
The unit consumes 70 watts while the motor is driving the shaft (running) and drops to 25 watts once the actuator reaches the end of its stroke and remains energized (holding).

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.