Description
MP-451 – 220 lb-in Proportional Actuator with SPDT Switch (120V, 90° Rotation)
The MP-451 is a heavy-duty proportional actuator designed for precision control of dampers, valves, and program switches in HVAC and industrial systems. Built with a die-cast aluminum housing and oil-immersed motor for durability and quiet operation, this actuator offers 220 lb-in torque with 90° rotation. An integrated SPDT auxiliary switch supports status feedback or interlocking. Hazardous location models are available with enhanced conduit options. Factory-wired terminals ensure easy installation, and UL listing provides assurance for safety and code compliance.
Key Features
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Proportional control with built-in feedback potentiometer
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220 lb-in torque output for demanding applications
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Non-spring return operation for steady performance
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SPDT auxiliary switch for position indication or control logic
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Die-cast aluminum housing with two ½" conduit openings
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Hazardous location models with ¾" pipe-tapped entries
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Oil-immersed motor and gear train for quiet, long-life operation
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Factory-assembled and UL Listed
Specifications
| Attribute | Value |
|---|---|
| Model | MP-451 |
| Control Type | Proportional |
| Fail Safe Mode | Non-Spring Return |
| Torque Output | 220 lb-in |
| Rotation Angle | 90° |
| Auxiliary Switch | SPDT |
| Voltage | 120 VAC |
| Timing | 80 seconds (for 90° rotation) |
| Operating Temp | -40°F to 136°F (-40°C to 58°C) |
| Housing Material | Die-cast aluminum |
| Conduit Openings | Two ½" standard (¾" for hazardous models) |
Typical Applications
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Damper control in HVAC systems
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Valve actuation for chilled or hot water loops
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Proportional modulation in industrial automation
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Control sequences requiring SPDT position feedback
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Use in hazardous environments with explosion-resistant enclosures
