Johnson Controls M9203-BGB-2 Actuator

Standardize your light-duty damper automation with the Johnson Controls M9203-BGB-2 Actuator, a field-proven spring return direct coupled actuator engineered for precise two-position (on/off) control. This 27 lb-in torque actuator is a staple for contractors handling small to medium-sized dampers and VAV boxes. It provides a reliable fail-safe position during power loss with a mechanical spring return that cycles in less than 25 seconds. Designed for versatility, it accepts both 24 VAC and 24 VDC power supplies and includes a 48-inch appliance cable with 1/2" conduit connectors to streamline wiring in tight mechanical spaces.

The M9203-BGB-2 features an integrated SPDT auxiliary switch, allowing for easy end-stop signaling or interlocking with secondary HVAC equipment without additional external components. Its direct-mount design eliminates the need for complex linkages, supporting 1/4" to 1/2" round shafts and 1/4" to 5/16" square shafts. With a power on run time of less than 75 seconds and a brushless DC motor, this 24V damper actuator ensures consistent performance and electronic stall detection to protect the gear train from damage due to obstructions.

• Versatile Power Compatibility: Operates on both 24 VAC and 24 VDC, reducing the need to carry multiple SKUs for different job site power requirements.
• Integrated Auxiliary Signaling: Features one factory-installed SPDT auxiliary switch for end-stop position indication or fan motor interlocking.
• Rugged Spring Return Fail-Safe: Ensures dampers return to a predetermined safety position during power interruptions in less than 25 seconds.
• Simplified Installation: The direct coupled mounting and included anti-rotation bracket eliminate the need for traditional linkage kits, saving time on-site.
• Durable Brushless Motor: Internal microprocessor-controlled motor provides overload protection and precise timing across the 95-degree rotation range.

Can the M9203-BGB-2 be used for floating or proportional control?
No, this specific model is designed strictly for two-position (on/off) operation. For floating or 0-10 VDC proportional applications, you will need a different model within the M9203 series.

How do I reverse the spring return direction?
The spring return direction (Clockwise or Counterclockwise) is determined by how the actuator is mounted on the damper shaft. Simply flip the actuator over to change the fail-safe orientation.

Is this actuator suitable for outdoor installation?
The M9203-BGB-2 is rated for indoor applications (NEMA 2). If installing in a high-moisture or outdoor environment, a protective NEMA 4X weather shield is required to prevent damage to the electronics.

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.