Product Description
. . . . . Siemens GCA164.1U GCA Modulating Spring Return 142 lb-in Electronic Damper Actuator w/ Adj. Start/Span & Aux Switches - The OpenAir 24 Vac/dc spring return 142 lb-in electronic actuator is designed for digital or analog control of building HVAC dampers. These actuators are designed for use in constant or variable air volume installations for the control of return air, mixed air, exhaust, and face and bypass dampers requiring up to 142 lb-in (16 Nm) torque. They are designed for applications that require the damper to return to a fail-safe position when there is a power failure.. Siemens. Siemens. GCA164.1U.