Schneider Electric (Barber Colman) MA40-7170 Actuator

The Schneider Electric (Barber Colman) MA40-7170 Actuator is a high-torque DuraDrive solution engineered for the rigorous fail-safe requirements of modern HVAC systems. This spring return actuator provides 150 lb-in of torque, ensuring positive close-off in air-tight damper applications and valve control. Operating on 120V power supply, the unit utilizes a two-position control signal (On/Off) and features a mechanical spring return that automatically resets the damper or valve to its original position during a power loss. Designed for longevity in demanding environments, it incorporates an oil-immersed gear train for continuous lubrication and a rugged die-cast housing rated for NEMA 4 (IP56) protection. This model is the direct replacement actuator for several legacy units, including the MA-418-154, MA40-UF120, and MA50-E2001, allowing for seamless mechanical and electrical upgrades without extensive field modifications. The 36-inch appliance cable and universal mounting clamps simplify HVAC actuator installation on round or square shafts.

Key Benefits

• High Torque Output: Delivers a reliable 150 lb-in (17 N-m) of torque to handle large dampers and high-pressure valve assemblies.
• NEMA 4 Rated Protection: The die-cast aluminum housing is built for both indoor and outdoor environments, providing superior resistance to dust and moisture.
• Universal Compatibility: Features dual industrial-hardened universal mounting clamps for direct attachment to round or square damper shafts.
• Fail-Safe Reliability: True mechanical spring return ensures equipment returns to its safety position during power interruptions.
• Extended Service Life: Equipped with an oil-immersed gear train and automatic current-sensing motor protection to prevent burnout during stall conditions.

Common Questions

What parts can the MA40-7170 replace?
This unit is a confirmed direct replacement for the Barber Colman MA-418-154, MA40-UF120, and MA50-E2001. It is also compatible with many legacy SmartX and DuraDrive mounting footprints.

Is this actuator suitable for outdoor use?
Yes, when used with water-tight conduit connectors, the MA40-7170 meets NEMA 4 (IP56) standards, making it suitable for rooftops and other exposed environments.

Can I gang-mount this actuator for higher torque?
Yes, MA40-717X series actuators are designed for gang-mounting (2 to 4 units) to accommodate dampers requiring torque greater than 150 lb-in.

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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.