SIEMENS
SIEMENS GCA121.1P Electric Actuator Thermostat 160 in-lb 24V
An electric damper actuator delivering 160 in-lb torque at 24 V AC/DC with spring return in 15 seconds
- TypeLearning Thermostats
- Precise 90-degree stroke for accurate damper positioning
- Spring-return safety closes the valve in 15 seconds
- Self-centering shaft coupling simplifies direct mounting
- IP54 and NEMA 2 ratings protect against dust and splashes
- 24 V AC/DC supply compatible with building automation systems
Electric Actuator for Building Automation
The SIEMENS GCA121.1P electric actuator delivers 160 in-lb of rated torque for damper control in building automation systems. It operates on 24V AC/DC input voltage and provides a 0 to 10V DC output signal. The unit features a spring-return mechanism with a 15-second close time and a 90-degree stroke.
Direct Mount with Self-Centering Shaft
Installation uses a direct-mount design with a self-centering shaft coupling that simplifies alignment on the damper shaft. The actuator supports both clockwise and counterclockwise rotation. Electrical connections are hardwired, and the NEMA 2 enclosure with IP54 rating protects internal components in indoor environments.
Verify Voltage Signal and Shaft Compatibility
Confirm your system supplies 24V AC/DC power and accepts a 0 to 10V DC control signal before ordering. Ensure the damper shaft dimensions suit the self-centering coupling and that the 90-degree stroke matches the required travel. The spring-return action requires power to hold the open position.
Highlights
- Precise 90-degree stroke for accurate damper positioning
- Spring-return safety closes the valve in 15 seconds
- Self-centering shaft coupling simplifies direct mounting
- IP54 and NEMA 2 ratings protect against dust and splashes
- 24 V AC/DC supply compatible with building automation systems
Specifications
| Brand | SIEMENS |
|---|---|
| Type | Learning Thermostats |
Questions about this item
How can I confirm the actuator is operating correctly after installation?
Verify the shaft rotates 90 degrees in both clockwise and counter-clockwise directions, the spring return closes the damper within 15 seconds, and the output signal reads 0 to 10V DC at the controller.
What components are included with the GCA121.1P and what must be sourced separately?
The actuator ships with a self-centering shaft coupling for direct mounting; 24V AC/DC power wiring and integration into the building automation system must be provided separately.
Which torque and voltage version should I select for a 160 in-lb damper on a 24V circuit?
Choose this GCA121.1P model rated for 160 in-lb torque and 24V AC/DC input; it is the only version matching those exact specifications.
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