Schneider Electric (Barber Colman) MP-454 Proportional Actuator

The Schneider Electric (Barber Colman) MP-454 Proportional Actuator is a robust non-spring return actuator designed for reliable control of dampers, valves, and specialized terminal units. Operating on 120V AC, this high-torque motor provides 220 lb-in torque, ensuring consistent positioning for heavy-duty HVAC automation solutions. It features a field-adjustable 40-400 second timing range (no load) and a full 90-degree rotation for precise modulation. As a veteran-grade replacement for Barber Colman EA55 and 35-571 units, the MP-454 includes a factory-installed SPDT auxiliary switch to allow for auxiliary circuit control or position feedback. Built for industrial longevity, this proportional control motor is compatible with 100 to 1000 ohm slidewire controllers, making it a drop-in solution for legacy system upgrades and modern BMS integrations. It serves as a direct technical successor to the EA55-00000-000 and EMP-454-1, maintaining exact mounting footprints and electrical characteristics for seamless field installation.

Key Benefits

• High Torque Output: Delivers 220 lb-in of force to handle large damper assemblies and high-pressure valve applications without stalling.
• Adjustable Timing: The 40-400 second stroke flexibility allows technicians to tune the response time to match specific system dynamics.
• Universal Replacement: Specifically engineered to replace 35-571 actuators and legacy EA-55 series motors, reducing downtime during maintenance.
• Integrated Auxiliary Switch: The internal SPDT switch simplifies the wiring of end-stop verification or secondary equipment triggers.
• Rugged Construction: Designed for continuous duty in demanding mechanical rooms and industrial environments.

Common Questions

Is the MP-454 a direct replacement for the EA-55 series?
Yes, the MP-454 is the official direct replacement for the Barber Colman EA-55, EA55-00000-000, and EMP-454-1 models, utilizing the same voltage and torque specifications.

Can this actuator be used in failsafe applications?
No, the MP-454 is a non-spring return actuator. It will maintain its last position upon loss of power rather than returning to a pre-set 'open' or 'closed' state.

What controllers are compatible with this proportional actuator?
This unit is designed to work with proportional controllers providing a 100 to 1000 ohm slidewire signal, common in older pneumatic-to-electric bridges and legacy electronic systems.

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.