Schneider Electric (Barber Colman) MA40-7040-501 Actuator

The Schneider Electric MA40-7040-501 is a high-performance DuraDrive spring return actuator designed for reliable two-position control in commercial HVAC systems. Operating on a 120V power supply, this direct-coupled actuator delivers a minimum of 35 lb-in torque, making it an ideal choice for managing small dampers or valves. The unit features a built-in auxiliary switch for end-stop signaling and feedback, ensuring precise sequence of operations. With a low power consumption profile of 3.4 watts running and 1.2 watts holding (4.3 VA), it optimizes energy efficiency within the control loop. Its universal clamp mounting system accommodates round shafts up to 5/8" or square shafts up to 1/2", allowing for a streamlined installation process. This rugged spring return damper actuator provides fail-safe positioning upon power loss, maintaining system integrity in critical air handling and terminal unit applications.

• Fail-Safe Reliability: Mechanical spring return ensures the damper or valve returns to its original position during power interruptions.
• Integrated Auxiliary Switch: Simplifies field wiring for status indication and interlocking with external equipment.
• Versatile Mounting: The universal shaft clamp eliminates the need for specialized linkages on most standard shaft sizes.
• Low Power Consumption: Minimizes the load on 120V control circuits, allowing for more devices per branch.

Common Questions

Is the MA40-7040-501 suitable for modulating control?
No, this specific model is a two-position (On/Off) actuator. For 0-10 Vdc or 4-20 mA modulation, a different DuraDrive series model would be required.

What is the purpose of the built-in auxiliary switch?
The SPDT auxiliary switch is used to provide confirmation that the actuator has reached its end-of-travel position, typically used for starting fans or secondary equipment.

Can this actuator be mounted in any orientation?
It can be mounted in most orientations, provided the shaft is horizontal or vertical, though it is recommended to avoid mounting with the conduit openings facing upward in high-moisture environments.

This item is not eligible for free shipping.

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.