The Schneider Electric (Barber Colman) MA-318 is a reliable two-position electric actuator engineered for precise damper and valve control in commercial HVAC and building automation applications. Designed for dependable on/off operation, this actuator features spring return functionality to ensure a safe, fail-safe position upon power loss — a critical requirement in many building control systems.
Key Features
- Two-position (on/off) actuator for straightforward open/close control
- 24V operating voltage for compatibility with standard low-voltage control systems
- Spring return mechanism provides automatic fail-safe positioning on power loss
- 60 lb-in torque output for dependable damper or valve actuation
- 70 Watts running input power for reliable, consistent operation
- 25 Watts holding input power for energy-efficient position maintenance
- Output shaft must be oriented horizontally for proper mounting — critical installation requirement
Specifications
- Model: MA-318
- Brand: Schneider Electric (Barber Colman)
- Control Type: Two Position
- Supply Voltage: 24V
- Return Type: Spring Return (Fail-Safe)
- Torque Output: 60 Lb-In
- Running Input Power: 70 Watts
- Holding Input Power: 25 Watts
- Shaft Orientation: Output shaft must be horizontal for mounting
Applications
- Commercial HVAC damper actuation
- Building automation and control systems
- Air handling unit (AHU) damper control
- Valve actuation in hydronic and air-side systems
- Retrofit and replacement of existing Barber Colman actuators
Installation Notes
Proper installation of the MA-318 requires that the output shaft be positioned horizontally. Failure to observe this mounting orientation may result in improper operation or premature wear. Always verify shaft orientation before final installation.
