Schneider Electric (Barber Colman) MA-405 Actuator

The Schneider Electric (Barber Colman) MA-405 Actuator is a heavy-duty two-position actuator engineered for reliable on/off control of dampers, valves, and other HVAC components requiring 16 Lb-In torque. Operating on 120V with a power consumption of 25 Watts, this unit is built for sustained performance in commercial environments. It features a versatile oil-immersed motor and gear train, allowing for multi-position mounting, though a horizontal output shaft orientation is professionally recommended for maximum service life. For technicians performing retrofits, the MA-405 serves as the direct obsolete actuator replacement for legacy models including ADDB-2, CYCH-625, EMA-405, and the MA-405-0-0 series suffix variants. Its spring-return mechanism ensures a fail-safe position upon power loss, providing essential protection for air handling units and heating systems.

Key Technical Benefits:

• Universal Installation: The 120V spring return actuator supports field mounting in any orientation to accommodate tight mechanical room footprints.
• Cross-Brand Compatibility: Directly replaces Barber Colman and Schneider Electric legacy two-position control units without needing extensive linkage modifications.
• High Torque Density: Delivers a consistent 16 Lb-In output, sufficient for medium-sized dampers and valve assemblies.
• Industrial Duty Cycle: Designed for high-cycle applications where on/off HVAC control must remain consistent under varying thermal loads.

Common Contractor Questions:

What are the direct cross-references for the MA-405?
This unit is the primary replacement for the Barber Colman MA-405-0-0-2, MA-405-0-0-3, and MA-405-0-0-4, as well as the ADDB-2 and CYCH-625 models.

Does this actuator require a specific transformer?
No, the MA-405 heavy-duty actuator runs on standard 120V line voltage, eliminating the need for step-down transformers in most control circuits.

Can I use this for modulating applications?
No, this is a two-position actuator designed strictly for open/closed or on/off sequences. For 4-20mA or 0-10Vdc signals, a modulating series would be required.

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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.