Schneider Electric (Barber Colman) MP-485 Proportional Actuator

The Schneider Electric (Barber Colman) MP-485 Proportional Actuator is a heavy-duty solution for high-torque applications requiring precise modulating control of dampers, valves, and sequencing programmers. Engineered for long-term reliability in commercial HVACR environments, this 120V electric actuator features an oil-immersed motor and gear train housed in a rugged die-cast aluminum NEMA 1 enclosure. With a robust 220 lb-in torque capacity and a 130-second timing interval (no load), the MP-485 ensures steady, non-spring return operation across a full 180-degree rotation. This model is electrically identical to the MP-485-0-2-2, featuring a built-in transformer and an integrated SPDT auxiliary switch for expanded system feedback and auxiliary equipment interlocking. The internal feedback potentiometer allows for accurate positioning when paired with compatible 2 to 12 VDC controllers, making it a staple for retrofitting and maintaining sophisticated commercial damper drive systems.

• High Torque Output: Delivers 220 lb-in of force, suitable for large-scale damper assemblies and high-pressure valve applications.
• Durable Construction: Features an oil-immersed gear train and motor for superior heat dissipation and reduced mechanical wear.
• Simplified Wiring: Includes a built-in transformer to power internal circuitry and clear terminal block connections for faster field installation.
• Versatile Compatibility: Designed for seamless integration with Barber Colman Microtherm and other proportional electronic control systems.
• Position Feedback: The 180-degree adjustable rotation and SPDT auxiliary switch provide critical status monitoring for complex HVAC sequences.

Is the MP-485 compatible with the MP-485-0-2-2?
Yes, these two part numbers refer to the same technical specifications and are drop-in replacements for one another.

Does this actuator return to a "fail-safe" position on power loss?
No, this is a non-spring return actuator. It will maintain its last position upon loss of power unless manually overridden.

What is the control signal requirement for this model?
The MP-485 typically operates on a 2 to 12 VDC proportional signal, utilizing its internal feedback potentiometer for precise positioning.

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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.