SPRING RETURN ELECTRIC ACTUATOR (DAMPER STYLE)

These bidirectional actuators do not require a damper linkage, and are easily installed on dampers with 112 to 3/4 in . or 12 to 19 mm round shafts. or 3/8 and 112 in. or 10. 12. and14 mm square shafts using the standard shaft clamp included with the actuator.

A single SERIES 900 Electric Spring Return Actuator provides a running and spring return torque of 177 tb·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 900 models to indicate end-stop position, or to perform switching functions within the selected rotation range.

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 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 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 various models to indicate end-stop position, or to perform switching functions within the selected rotation
range.

Available torques of 177 lb·in (20 N·m) for single actuators, 354 lb·in (40 N·m) for two models, and 531 lb in (60 N·m) for three models mounted in tandem — offer a selection that is most suitable for the application
Reversible mounting design — simplifies installation and enables the actuator to spring return in either direction
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
0.2 AMP draw
Integral 48 in. (1.2 m) halogen-free cables with colored and numbered conductors — simplify field wiring
Integral auxiliary switches — provide one fixed and one adjustable switch point with line voltage capability
NEMA 2 (IP54) rated aluminum enclosure — protects the internal components of the actuator from dirt and moisture