Schneider Electric (Barber Colman) MA40-7173 Actuator

The Schneider Electric (Barber Colman) MA40-7173 is a heavy-duty DuraDrive direct coupled actuator designed for two-position damper and valve control in demanding HVACR environments. This spring return actuator provides a robust 150 lb-in torque, ensuring reliable fail-safe operation and positive close-off in high-static applications. Operating on 24V AC/DC, it features an oil-immersed gear train for continuous lubrication and a rugged NEMA 4 die-cast housing rated for extreme conditions. The MA40-7173 is the direct replacement for the MA40-UF24, maintaining the same performance profile while offering updated current-sensing motor protection. For contractors, the universal mounting clamps allow for direct attachment to round or square shafts, while the 36-inch appliance cable simplifies 24VAC damper actuator wiring in the field. This unit is engineered for industrial HVAC automation, delivering consistent timing and high-torque reliability without the need for complex linkages.

• Failsafe Spring Return: Provides automatic mechanical return to the original position during power loss for 100% reliable system protection.
• High Torque Output: Delivering 150 in-lb torque, this unit handles large dampers and high-pressure airflow without binding.
• Superior Durability: The oil-immersed gear train and NEMA 4 (IP56) rated housing provide long-term protection against moisture and mechanical wear.
• Simple Retrofitting: Serves as the official Schneider Electric MA40-UF24 replacement, ensuring a drop-in fit with existing electrical footprints.
• Overload Protection: Equipped with automatic current sensing to prevent motor burnout throughout the full 95-degree rotation.

• Can the MA40-7173 be used on aluminum damper shafts? No, due to the high stall torque (up to 545 in-lb), it is not recommended for aluminum or undersized hollow steel shafts to prevent shearing.
• What is the difference between the MA40-7173 and the MS40 series? The MA40-7173 is a two-position (on/off) actuator, whereas the MS40 series is designed for proportional (2-10 VDC) control.
• Is this actuator compatible with 24V DC systems? Yes, this SmartX DuraDrive model accepts both 24V AC and 24V DC power inputs for flexible installation.

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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.