Siemens Building Technology GCA221.1U Actuator 320788-702 contractors can restore the factory-standard

contractors can restore the factory-standard electrical configuration of Williams wall furnaces with minimal installation downtime

The motor features automatic thermal protection and sleeve bearings for quiet

which is critical for reliability in hot mechanical rooms or enclosed control panels

delivering 1550/1050 RPM to ensure consistent static pressure management in commercial and residential ventilation systems

verify your existing footprint matches the 8" x 4

Siemens Building Technology GCA221.1U Actuator 320788-702 contractors can restore the factory-standardThe Siemens GCA221. 1U is a high torque spring return rotary actuator engineered for reliable control of building automation dampers and valves. Operating on 120 VAC, this Open Closed (on off) actuator delivers 142 lb in (16 Nm) of torque, making it a standard choice for large air handlers and systems requiring fail safe positioning. Designed for mechanical spring return during power loss, it ensures the controlled component returns to its safety