The Barber Colman MA-318 is a compact, oil-submerged electric damper actuator designed for two-position (on/off) control in HVAC systems. Operating on 24 VAC, it delivers 60 in-lb of torque and features a spring return mechanism to ensure dampers return to a fail-safe position upon power loss. Its robust construction and reliable performance make it suitable for various commercial and industrial applications.
Technical Specifications
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Model: MA-318
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Type: Electric damper actuator
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Control Signal: 2-position (on/off)
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Voltage: 24 VAC
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Frequency: 50/60 Hz
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Torque: 60 in-lb
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Power Consumption: 70 W running, 25 W holding
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Spring Return: Yes
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Mounting Orientation: Output shaft must be horizontal
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Dimensions: 7.25″ x 7.45″ x 8.75″
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Weight: Approximately 8.78 lbs
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Protection Rating: NEMA 1
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Condition: New
Key Features
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Provides reliable two-position control for HVAC dampers
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Spring return mechanism ensures safety during power outages
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Oil-submerged design enhances durability and performance
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Compact size suitable for various installations
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Designed for 24 VAC power supply
Compatible Applications
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HVAC systems requiring two-position damper control
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Ventilation and exhaust systems
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Applications where fail-safe damper positioning is critical
Installation & Maintenance Notes
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Ensure proper alignment during installation to prevent binding
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Verify electrical connections match the actuator’s specifications
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Regularly inspect for signs of wear or damage
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Follow manufacturer guidelines for maintenance procedures
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance