Description
The Siemens GCA121.1U is a heavy-duty spring-return damper actuator engineered for dependable ON/OFF control in commercial HVAC and building automation applications. Powered by a 24VAC supply, it delivers a robust 142 in-lb of torque to drive large or high-resistance dampers with confidence. The spring-return mechanism ensures the actuator automatically returns to its fail-safe position upon loss of power, making it an ideal choice for life-safety and critical ventilation systems.
Key Features
- Spring-return (SR) fail-safe operation for reliable power-loss positioning
- 24VAC power supply for compatibility with standard building automation systems
- ON/OFF control signal for straightforward open/close damper operation
- 142 in-lb torque output to handle large or high-friction damper assemblies
- Designed for commercial HVAC, AHU, and building automation applications
- Siemens Building Technology quality construction for long service life
Application
The GCA121.1U is well-suited for air handling units, rooftop units, and commercial ventilation systems where dependable damper control is critical. Its spring-return design makes it appropriate for outside air, exhaust, and mixed-air dampers that require a defined fail-safe position. The 24VAC input integrates seamlessly with most commercial DDC and BAS controllers.
Specifications
- SKU: GCA121.1U
- Brand: Siemens Building Technology
- Control Type: ON/OFF
- Return Type: Spring Return (SR)
- Supply Voltage: 24VAC
- Torque Output: 142 in-lb
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