Schneider Electric (Barber Colman) M573-5108 Piston Damper Actuator

The Schneider Electric M573-5108 is a heavy-duty pneumatic piston damper actuator designed for the precise positioning of air dampers in commercial HVAC systems. Built for long-term reliability in the field, this 3-inch stroke actuator features an 8 to 13 psig spring range, ensuring consistent performance in both proportional and two-position applications. The unit is engineered for right-angle mounting and comes standard with a reinforced mounting bracket and ball joint to simplify installation on air conditioning, multi-zone, and ventilating units. With a 20 psig nominal supply pressure, the M573-5108 utilizes a fail-safe spring-return mechanism that automatically retracts the actuator shaft upon a loss of air pressure. This model is a direct functional replacement for the Barber Colman 2473-040 and MK-573-58, maintaining seamless compatibility with existing pneumatic control signals. The 1/4" O.D. barbed fitting air connection allows for quick integration with standard plastic tubing, making it a staple for contractors maintaining legacy pneumatic infrastructure.

• Direct Cross-Compatibility: Perfectly replaces legacy Barber Colman 2473-040 and MK-573-58 models without requiring linkage modifications.
• Fail-Safe Operation: Internal 8-13 psi spring provides a reliable mechanical return to the retracted position if pneumatic signal pressure is lost.
• Rugged Hardware Included: Includes a right-angle mounting bracket and high-performance ball joint for high-torque damper applications.
• Versatile Control: Optimized for use in multi-zone heating, fan coil units, and mixing box dampers requiring a 3-inch stroke.
• Simplified Installation: Features a standard 1/4 inch barbed fitting for rapid connection to pneumatic control lines.

What is the maximum supply air pressure for the M573-5108?
While the nominal operating pressure is 20 psig, this actuator is designed to handle standard pneumatic control signals within that range to maintain the calibrated 8 to 13 psig spring sequence.

Can this actuator be used for smoke and fire damper applications?
The M573-5108 is primarily intended for HVAC ventilation control. For life safety or high-temperature smoke applications, always verify that the actuator meets the specific UL ratings required by local building codes.

Is the mounting bracket included with the piston actuator?
Yes, this part number includes the right angle mounting bracket and the necessary ball joint linkage for immediate field replacement.

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.