Johnson Controls M9203-BGA-2 Actuator

The Johnson Controls M9203-BGA-2 is a compact spring return direct coupled actuator engineered for reliable operation of dampers and valves in HVAC systems. Providing 27 lb-in torque, this unit is designed for two-position control and supports both 24VAC and 24VDC power inputs. With a power-on run time of less than 75 seconds and a spring return timing of 17 to 25 seconds, it ensures rapid fail-safe positioning during power loss. The M9203-BGA-2 features a pre-wired 48-inch appliance cable with 1/2-inch conduit connectors, simplifying field installation in tight mechanical spaces. Its aluminum enclosure provides durability, while the reversible mounting design allows for either clockwise or counterclockwise spring return action. This on/off actuator is highly compatible with building automation systems requiring precise end-point control for small to medium-sized dampers.

Key Benefits

• Dual-Voltage Versatility: Seamlessly integrates into 24V control circuits utilizing AC or DC power.
• Mechanical Fail-Safe: Reliable spring return mechanism ensures dampers reach their mandatory safety position upon power interruption.
• Simplified Wiring: Integral 48-inch appliance cable and conduit connectors reduce the need for additional field-supplied junction boxes.
• Compact Footprint: Low-profile design is ideal for installation on VAV boxes and small air handling units.
• Flexible Mounting: Direct-coupled design eliminates the need for complex linkages, reducing mechanical failure points.

Common Questions

What is the maximum damper area the M9203-BGA-2 can drive?
With a 27 lb-in (3 Nm) torque rating, this actuator is typically rated for dampers up to 6.75 square feet, depending on seal friction and air pressure.

How do you change the fail-safe direction?
The spring return direction is determined by which side of the actuator is mounted facing the damper shaft; simply flip the unit to change from Normally Closed to Normally Open.

Can this actuator be used in variable air volume (VAV) applications?
Yes, it is frequently used for on/off control in VAV terminal units where a spring return safety function is required.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.