Description
The Johnson Controls M9208-BAC-3 is a heavy-duty, spring return direct coupled actuator engineered for reliable two-position damper control in commercial HVAC applications. Operating on 120VAC power, this actuator delivers 70 lb-in of torque to drive dampers to the open or closed position with authority and precision. When power is removed, the integral spring return mechanism automatically drives the actuator to its fail-safe position — a critical safety feature for smoke control, ventilation, and energy management systems.
The M9208-BAC-3 ships with a 48-inch appliance cable terminated with an integral 3/8″ Flexible Metal Conduit (FMC) connector, simplifying field installation and ensuring a secure, code-compliant electrical connection. Two built-in SPDT (Single-Pole, Double-Throw) auxiliary switches provide end-of-travel feedback signals for integration with building automation systems, control panels, or status indicators.
Key Features
- 120VAC operating voltage for compatibility with standard commercial control circuits
- Two-position (open/close) control operation
- 70 lb-in output torque for positive damper actuation
- 55–71 second power-on run time for controlled, smooth damper travel
- Spring return fail-safe mechanism — returns to safe position on power loss
- Direct coupled design — mounts directly to damper shaft without linkage
- 48″ appliance cable with integral 3/8″ FMC connector for easy, secure wiring
- 2 SPDT auxiliary switches for end-of-travel feedback and BAS integration
Specifications
- Model: M9208-BAC-3
- Brand: Johnson Controls
- Supply Voltage: 120VAC
- Control Type: Two Position
- Output Torque: 70 lb-in
- Run Time (Power On): 55–71 seconds
- Fail-Safe: Spring Return
- Cable Length: 48 inches
- Cable Connector: Integral 3/8″ FMC
- Auxiliary Switches: 2 × SPDT
- Mounting: Direct Coupled
Applications
- Commercial HVAC damper control
- Ventilation and air handling units
- Smoke and fire damper position indication
- Building automation and energy management systems
- Two-position zone control applications
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