The Barber Colman MA-5330 is a durable, two-position actuator built for use with HVAC dampers or valve systems. Designed for SPST controller operation, this model provides reliable open/close action with a spring return feature that ensures fail-safe positioning. A quiet, oil-immersed motor with integrated hydraulic pump delivers smooth and powerful movement, making it ideal for both commercial and industrial control environments.
Technical Specifications
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Model: MA-5330
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Type: Hydraulic Damper/Valve Actuator
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Control Type: Two-Position (SPST-controlled)
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Return Type: Spring Return
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Voltage Options: Available in 24 VAC, 120 VAC, and 240 VAC models
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Auxiliary Switch: Not included (see MA-5330-500 for version with SPDT auxiliary switch)
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Housing:
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Lower: Die-cast with 1/2″ conduit opening
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Upper: Painted steel
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Motor Type: Oil-immersed motor and hydraulic pump
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Mounting: For damper or valve linkage installations
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Condition: New
Key Features
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Two-position functionality ideal for open/close control
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Spring return ensures automatic reset to safe position on power loss
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Smooth hydraulic operation powered by oil-immersed motor
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Compatible with SPST controllers in HVAC and process systems
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Heavy-duty housing for industrial and commercial reliability
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Interchangeable base allows use with damper or valve linkage kits
Compatible Applications
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HVAC air damper systems
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Boiler draft or combustion air control
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Valve actuation in heating/cooling applications
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Industrial and commercial ventilation control
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Systems requiring mechanical fail-safe response
Installation & Maintenance Notes
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Select correct voltage version to match your control circuit
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Install with proper linkage to damper or valve shaft
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Confirm spring return direction during setup
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Use secure conduit connection via 1/2″ opening
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Inspect periodically for hydraulic system integrity and electrical wear
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance