The Siemens GCA156.1U is a rotary electric damper actuator designed for precise control in HVAC and industrial applications. It delivers a torque of 160 lb-in (18 Nm) and operates on 24 VAC/DC power, making it compatible with a range of control systems. This actuator features a spring return mechanism for reliable fail-safe positioning and supports 0-10 V or 2-10 V control signals for flexible modulation. With a run time of 90 seconds, it offers smooth and efficient operation. Additional capabilities include position feedback and signal inversion, along with dual auxiliary switches for enhanced monitoring and integration. This high-quality actuator, part of Siemens’ OpenAir GCA series, is available through BSP Automation, ensuring easy access for your automation projects.