Schneider Electric (Barber Colman) MP-452 Damper

The Schneider Electric Barber Colman MP-452 is a heavy-duty proportional actuator designed for the precise positioning of dampers, valves, and ventilation flaps in high-demand industrial and commercial HVAC systems. This non-spring return actuator delivers a robust 220 lb-in torque, ensuring reliable control even under significant load conditions. Operating on 120V AC power, the MP-452 features a versatile 180-degree rotation and an adjustable timing range between 80 and 800 seconds (no load), allowing technicians to fine-tune system response times for optimal airflow or fluid modulation. For those performing retrofits, the MP-452 serves as the direct engineered replacement for legacy models 35-572, EA-56, and EA56-11010, providing a seamless upgrade path for aging building automation infrastructure.

Built with an integrated SPDT auxiliary switch, this electric rotary actuator offers vital feedback for system sequencing and position monitoring. Its NEMA 4 rated housing and wide operating temperature range (-40°F to 136°F) make it suitable for challenging mechanical environments. The inclusion of clear screw terminals simplifies the wiring diagram execution, effectively reducing installation labor for electrical contractors. Whether managing zone-level building automation or complex industrial fluid regulation, the Schneider MP-452 actuator provides the high-torque, proportional control necessary for maintaining tight environmental tolerances and energy efficiency across the mechanical plant.

• Direct Legacy Replacement: Specifically engineered to replace 35-572, EA-56, and EA56-11010 units without complex modification.
• High Torque Capacity: Generates 220 lb-in torque to drive large damper banks and high-pressure valves.
• Adjustable Timing: Field-adjustable speed range of 80 to 800 seconds for customized control loop tuning.
• Integrated Feedback: Built-in SPDT auxiliary switch enables easy automation sequencing and status verification.
• Industrial Grade Durability: Robust construction with a NEMA 4 rating for protection against dust and moisture ingress.

• What is the proper wiring for the MP-452 SPDT switch? The auxiliary switch is designed to control the same voltage as the actuator motor and should be wired to provide position-based feedback to the controller or to sequence secondary equipment.
• Can this actuator be used in sub-zero environments? Yes, the Schneider Electric MP-452 is rated down to -40°F, making it ideal for outdoor air intake dampers in cold climates.
• Is the MP-452 a spring return model? No, this is a non-spring return (NSR) actuator; it will maintain its last position upon loss of power unless manually overridden or driven by a backup power source.

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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.