Description
The Barber Colman MA-418 is a spring-return electric actuator designed for two-position control of dampers and mechanical equipment in commercial and industrial HVAC systems. Barber Colman part number MA-418 operates on 120 VAC single-phase power and provides 60 lb-in of torque for reliable positioning of connected equipment. Its spring-return mechanism automatically moves the actuator toward its normal position when electrical power is removed.
Technical Specifications
|
Condition
|
New/Never Used Surplus
|
|
Brand
|
Barber Colman
|
|
Category
|
HVAC & Building Automation
|
|
Part Number
|
MA-418
|
|
Subcategory
|
Spring Return Actuators
|
|
Manufacturer
|
Barber Colman / Invensys
|
|
Series
|
MA-400 Series
|
|
Product Type
|
Two-Position Spring Return Electric Actuator
|
|
Actuator Application
|
HVAC Dampers and Valves
|
|
Operating Voltage
|
120 VAC
|
|
Frequency
|
60 Hz
|
|
Phase
|
Single-Phase
|
|
Control Type
|
Two-Position (On/Off)
|
|
Rated Torque
|
60 lb-in
|
|
Power Consumption
|
70 W Running / 25 W Holding
|
|
Running Input
|
108 VA
|
|
Holding Input
|
42 VA
|
|
Actuator Rotation
|
170° Clockwise When Energized
|
|
Spring Return Direction
|
Counterclockwise
|
|
Spring Return Time
|
Approximately 60 Seconds at Full Opposing Load
|
|
Motor Construction
|
Oil-Immersed Motor and Gear Train
|
|
Housing Material
|
Die-Cast Aluminum
|
|
Electrical Connection
|
Coded Screw Terminals
|
|
Control Circuit
|
Two-Wire
|
|
Mounting Requirement
|
Horizontal Output Shaft
|
|
Operating Temperature
|
-40°F to 136°F
|
|
Relative Humidity
|
5–95%, Non-Condensing
|
|
Country of Origin
|
USA
|
|
Weight
|
8.4 lb
|
Information About MA-418
The MA-418 is a Barber Colman electric actuator designed for on/off positioning applications in heating, ventilation, and air conditioning control systems. Its electromechanical construction combines a 120 VAC motor drive with a mechanical spring-return mechanism, allowing powered movement in one direction and automatic return when the supply is interrupted. The actuator operates at 60 Hz and provides 60 lb-in of rated torque, with electrical consumption of 70 W during operation and 25 W while holding position. Designed for integration with compatible damper assemblies and mechanical linkages, the unit supports building automation applications requiring two-position control and automatic return functionality.
Key Features:
-
Spring-Return Operation: Automatically returns the actuator toward its normal position when electrical power is removed.
-
60 lb-in Torque Output: Provides mechanical force for positioning compatible HVAC dampers and control mechanisms.
-
120 VAC Power Supply: Operates from standard 120 VAC single-phase electrical power.
-
Two-Position Control: Supports fully open and fully closed positioning in compatible HVAC control applications.
-
60 Hz Frequency: Designed for operation with 60 Hz electrical supply systems.
-
70 W Running Consumption: Uses approximately 70 watts during powered actuator movement.
-
25 W Holding Consumption: Requires approximately 25 watts to maintain its energized position.
-
Electromechanical Drive: Combines an electric motor and spring mechanism for controlled movement and automatic return.
-
HVAC Damper Compatibility: Intended for integration with suitable air-handling dampers and mechanical control linkages.
-
Power-Loss Return: Provides automatic mechanical repositioning when the electrical supply is interrupted.
-
Industrial Control Application: Suitable for building automation, ventilation control, and HVAC equipment operation.
-
American Manufacturing: Identified as a USA-manufactured Barber Colman actuator.
The MA-418 delivers the reliability and precision required for two-position HVAC damper control, ventilation system operation, and spring-return mechanical positioning.
