Siemens Building Technology GMA221.1U 120 V 62 lb-in 2-Switch Spring Return Actuator

The OpenAir GMA Series Direct‑coupled, Spring Return Electronic Damper Actuators provide modulating, two position and floating control of building HVAC dampers. The OpenAir GMA Series Damper Actuators are ideal for constant or variable air volume installations for the control of return air, mixed air, exhaust, and face and bypass dampers that require up to 62 lb.‑in. of torque. The actuators are designed for applications where the damper is required to return to a fail‑safe position when there is a power failure. Models are available with either an appliance cable for wiring in conduit or a plenum‑rated cable.

Features:

Floating Control Models Available with Feedback Potentiometer
Small Actuator Footprint with 62 Lb.‑In. of Torque
All Modulating Types Contain Built‑In Feedback
Mechanical Range Adjustment Capability
Unique Self‑Centering Shaft Coupling
Integral 1/2‑Inch Conduit Connector
Bi‑Directional Fail‑Safe Spring Return
Brushless DC Motor Technology
Easily Visible Position Indicator
Manual Override

Specifications:

Manufacturer: Siemens Building Technology
Manufacturer Part Number: GMA221.1U
Product Type: Actuator
Voltage Rating: 120 V
Torque: 62 lb-in
Auxiliary Switch: 2
Actuator Type: Spring Return
Dimensions: 13.65" x 5.45" x 3.9"
Weight: 3.62 lb.

Installation Manual

Tech Sheet