SIEMENS
SIEMENS GQD121.1P electric actuator 20 in-lb 24V AC/DC thermostat
Electric actuator delivers 20 in-lb torque with 24 V AC/DC supply for damper control
- TypeLearning Thermostats
- 20 in-lb torque drives dampers reliably
- 24 V AC/DC input fits common building systems
- 15 second closing speed protects equipment
- 90 degree rotation covers full damper travel
- IP40 rating resists dust in mechanical rooms
Electric actuator for building automation
The SIEMENS GQD121.1P is a spring-return electric actuator rated at 20 in-lb of torque. It operates on 24V AC/DC power and accepts on/off control signals. The unit is designed for direct mounting on dampers or valves in building automation systems.
NEMA 1 enclosure with hardwired connections
A NEMA 1 and IP40 rating protects the mechanism in indoor environments. Hardwired electrical connections provide a permanent installation suited to fixed HVAC infrastructure. The set-screw shaft coupling fits standard damper shafts and allows clockwise or counter-clockwise rotation.
15-second spring return and 2–10V DC feedback
Spring return drives the actuator to its fail-safe position in 15 seconds when power is lost. A 2 to 10V DC output signal reports position to the building automation system for monitoring and sequencing. No separate programming tools or software bundles are included with the actuator.
Highlights
- 20 in-lb torque drives dampers reliably
- 24 V AC/DC input fits common building systems
- 15 second closing speed protects equipment
- 90 degree rotation covers full damper travel
- IP40 rating resists dust in mechanical rooms
Specifications
| Brand | SIEMENS |
|---|---|
| Type | Learning Thermostats |
Questions about this item
What signal type does the GQD121.1P actuator use for control?
It operates with an On/Off signal and provides a 2 to 10V DC output signal for building automation integration.
What shaft coupling and rotation does this actuator require for mounting?
It uses a set screw shaft coupling and supports both clockwise and counter-clockwise 90 degree rotation.
How is the actuator wired and what common mistake occurs during installation?
It requires a hardwired electrical connection to a 24V AC/DC supply; the step often missed is confirming the spring return direction matches the damper fail-safe position.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
