Schneider Electric MP-453-133 Proportional Electric Actuator 120V 220 in-lb 1000 Ohm

The Schneider Electric (Barber Colman) MP-453-133 is a proportional electric actuator designed for precise control of dampers, globe valves, and program switches in HVAC and industrial applications. This capacitor-driven actuator features a built-in 1000 ohm feedback potentiometer for accurate proportional control and position feedback.

Key Specifications:

• Power Input: 120 VAC
• Torque Output: 220 in-lb
• Rotation: 90 degrees
• Timing: 40 seconds (no load)
• Control Signal: Proportional with 1000 ohm feedback
• Auxiliary Switch: Single-pole, double-throw (SPDT)
• Protection Rating: NEMA 1
• Mechanical Movement: Rotary
• Loss of Power Type: Non-spring return

Construction Features:

• Rugged die-cast aluminum housing for durability
• Terminal block connections for easy wiring installation
• Two 1/2-inch conduit openings
• Oil-immersed motor and gear train for quiet, reliable operation
• All wiring brought out to separate terminals

The MP-453-133 is part of Schneider Electric's MP Series of reversible and proportional actuators, widely used in heating, ventilating, air conditioning, and similar control applications. The built-in feedback potentiometer enables precise proportional control for modulating applications. This model is a direct replacement for legacy part numbers including 35-575, EA-57, EMP-453-1, MF-443, and MF-453.