Description
Siemens GCA151.1U Spring-Return Modulating Damper Actuator
The Siemens GCA151.1U is a spring-return (SR) damper actuator engineered for commercial HVAC and building automation systems. Operating on a 24 VAC power supply and accepting a 4–20 mA modulating control signal, this actuator delivers precise, proportional damper positioning to support efficient air handling, ventilation control, and energy management in demanding building environments.
Key Features
- Spring-return (SR) fail-safe operation — damper returns to a defined safe position upon loss of power
- 24 VAC operating voltage for compatibility with standard building automation and HVAC control systems
- 4–20 mA modulating input signal for accurate, proportional damper positioning
- Designed for use with rectangular and round dampers in commercial air handling applications
- Compact, robust housing suitable for installation in mechanical rooms and air handling units
- Part of the Siemens Building Technologies family of HVAC control products
- Supports integration with BAS (Building Automation System) controllers and DDC systems
Typical Applications
- Commercial HVAC air handling units (AHUs)
- Variable air volume (VAV) systems
- Outdoor air and exhaust damper control
- Building automation and energy management systems
- Ventilation and mixed-air control sequences
Why Choose Siemens Building Technologies
Siemens Building Technologies is a globally recognized leader in HVAC controls, building automation, and fire safety. The GCA151.1U actuator reflects Siemens’ commitment to precision engineering, reliable fail-safe performance, and seamless integration with modern BAS platforms — making it a trusted choice for mechanical contractors, controls engineers, and facility managers.
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