Johnson Controls M9220-BAC-3 Series M9220 Electric Spring-Return Damper Actuator, On/Off Control, Two Auxiliary Switch, 120 VAC, 60 Hz

These bidirectional actuators do not require a damper linkage, and are easily installed on dampers with 1/2 to 3/4 in. or 12 to 19 mm round shafts, or 3/8 and 1/2 in. or 10, 12, and 14 mm square shafts using the standard shaft clamp included with the actuator. An optional M9220-600 Jackshaft Coupler Kit is available for 3/4 to 1-1/16 in. or 19 to 27 mm round shafts, or 5/8 and 3/4 in. or 16, 18, and 19 mm square shafts. A single M9220-xxx-3 Electric Spring-Return Actuator provides a running and spring-return torque of 177 lb·in (20 N·m). Two or three models mounted in tandem deliver twice or triple the torque. Integral line voltage auxiliary switches are available on the -xxC models to indicate end-stop position or to perform switching functions within the selected rotation range.

• Electronic Stall Detection throughout Entire Rotation Range — extends the life of the actuator by deactivating the actuator motor when an overload condition is detected
• Removable Coupler — adapts to a shorter damper shaft
• Integral 48 in. (1.2 m) Halogen-Free Cables with Colored and Numbered Conductors — simplify field wiring
• NEMA 2 (IP54) Rated Aluminum Enclosure — protects the internal components of the actuator from dirt and moisture
• Easy-to-Use Locking Manual Override with Auto Release and Crank Storage — allows for manual positioning of the actuator hub