
Siemens Building Technology GCA161.1U Actuator
The Siemens GCA161.1U is a high-torque spring return rotary actuator engineered for precise control of building automation dampers and ball valves. Operating on a 24VAC supply, this OpenAir actuator utilizes a 0-10 VDC modulating signal to provide 142 lb-in (16 Nm) of torque, ensuring reliable operation even in high-static pressure systems. Its robust construction is designed for HVAC damper control applications requiring fail-safe positioning during power loss. The unit features a self-centering shaft adapter, reducing installation time for various shaft diameters. Integrating this modulating damper actuator into a Siemens Building Technologies ecosystem ensures seamless compatibility and long-term mechanical stability. Technicians will find the manual override and position indicator essential for field commissioning and troubleshooting. This electronic actuator is built to withstand the rigorous demands of commercial air handling units, providing the proportional control necessary for maintaining strict indoor air quality and pressure setpoints.
- High Torque Output: Delivers 142 lb-in (16 Nm) to handle large dampers and heavy-duty valves.
- Mechanical Fail-Safe: Reliable spring return functionality ensures dampers return to a predefined safety position during power outages.
- Precise Modulation: Responds accurately to 0-10 VDC signals for fine-tuned airflow and temperature regulation.
- Simplified Installation: Features a self-centering shaft adapter and a pre-wired plenum cable for rapid field integration.
- Durable Housing: Rugged aluminum die-cast enclosure provides superior protection in demanding mechanical room environments.
Common Questions
How do I wire the Siemens GCA161.1U for a 0-10 VDC signal?
Connect the 24VAC power to terminals G (line) and G0 (neutral). The control signal is applied to terminal Y (0-10 VDC), while terminal U provides a 0-10 VDC feedback signal for position monitoring.
Can the direction of the spring return be changed in the field?
Yes, the fail-safe direction (Clockwise or Counter-Clockwise) is determined by how the actuator is mounted on the shaft. Simply flip the actuator to change the return stroke orientation.
What is the typical runtime for this actuator?
The GCA161.1U features a motor runtime of approximately 90 seconds for 90 degrees of rotation, with a spring return closing time of roughly 15 seconds.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $368.07
-65%$368.07
$128.82Siemens Building Technology GCA161.1U Actuator
The Siemens GCA161.1U is a high-torque spring return rotary actuator engineered for precise control of building automation dampers and ball valves. Operating on a 24VAC supply, this OpenAir actuator utilizes a 0-10 VDC modulating signal to provide 142 lb-in (16 Nm) of torque, ensuring reliable operation even in high-static pressure systems. Its robust construction is designed for HVAC damper control applications requiring fail-safe positioning during power loss. The unit features a self-centering shaft adapter, reducing installation time for various shaft diameters. Integrating this modulating damper actuator into a Siemens Building Technologies ecosystem ensures seamless compatibility and long-term mechanical stability. Technicians will find the manual override and position indicator essential for field commissioning and troubleshooting. This electronic actuator is built to withstand the rigorous demands of commercial air handling units, providing the proportional control necessary for maintaining strict indoor air quality and pressure setpoints.
- High Torque Output: Delivers 142 lb-in (16 Nm) to handle large dampers and heavy-duty valves.
- Mechanical Fail-Safe: Reliable spring return functionality ensures dampers return to a predefined safety position during power outages.
- Precise Modulation: Responds accurately to 0-10 VDC signals for fine-tuned airflow and temperature regulation.
- Simplified Installation: Features a self-centering shaft adapter and a pre-wired plenum cable for rapid field integration.
- Durable Housing: Rugged aluminum die-cast enclosure provides superior protection in demanding mechanical room environments.
Common Questions
How do I wire the Siemens GCA161.1U for a 0-10 VDC signal?
Connect the 24VAC power to terminals G (line) and G0 (neutral). The control signal is applied to terminal Y (0-10 VDC), while terminal U provides a 0-10 VDC feedback signal for position monitoring.
Can the direction of the spring return be changed in the field?
Yes, the fail-safe direction (Clockwise or Counter-Clockwise) is determined by how the actuator is mounted on the shaft. Simply flip the actuator to change the return stroke orientation.
What is the typical runtime for this actuator?
The GCA161.1U features a motor runtime of approximately 90 seconds for 90 degrees of rotation, with a spring return closing time of roughly 15 seconds.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens GCA161.1U is a high-torque spring return rotary actuator engineered for precise control of building automation dampers and ball valves. Operating on a 24VAC supply, this OpenAir actuator utilizes a 0-10 VDC modulating signal to provide 142 lb-in (16 Nm) of torque, ensuring reliable operation even in high-static pressure systems. Its robust construction is designed for HVAC damper control applications requiring fail-safe positioning during power loss. The unit features a self-centering shaft adapter, reducing installation time for various shaft diameters. Integrating this modulating damper actuator into a Siemens Building Technologies ecosystem ensures seamless compatibility and long-term mechanical stability. Technicians will find the manual override and position indicator essential for field commissioning and troubleshooting. This electronic actuator is built to withstand the rigorous demands of commercial air handling units, providing the proportional control necessary for maintaining strict indoor air quality and pressure setpoints.
- High Torque Output: Delivers 142 lb-in (16 Nm) to handle large dampers and heavy-duty valves.
- Mechanical Fail-Safe: Reliable spring return functionality ensures dampers return to a predefined safety position during power outages.
- Precise Modulation: Responds accurately to 0-10 VDC signals for fine-tuned airflow and temperature regulation.
- Simplified Installation: Features a self-centering shaft adapter and a pre-wired plenum cable for rapid field integration.
- Durable Housing: Rugged aluminum die-cast enclosure provides superior protection in demanding mechanical room environments.
Common Questions
How do I wire the Siemens GCA161.1U for a 0-10 VDC signal?
Connect the 24VAC power to terminals G (line) and G0 (neutral). The control signal is applied to terminal Y (0-10 VDC), while terminal U provides a 0-10 VDC feedback signal for position monitoring.
Can the direction of the spring return be changed in the field?
Yes, the fail-safe direction (Clockwise or Counter-Clockwise) is determined by how the actuator is mounted on the shaft. Simply flip the actuator to change the return stroke orientation.
What is the typical runtime for this actuator?
The GCA161.1U features a motor runtime of approximately 90 seconds for 90 degrees of rotation, with a spring return closing time of roughly 15 seconds.
This item is not eligible for free shipping.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












