Description
Siemens GMA161.1P Spring Return Proportional Actuator Overview
The Siemens GMA161.1P is a high-performance spring return actuator engineered for demanding building automation and HVAC control applications. Designed to deliver precise proportional control via a 0–10 VDC input signal, this actuator integrates seamlessly into modern building automation systems (BAS) and programmable logic controller (PLC) environments, ensuring accurate and repeatable positioning of dampers and valves.
Key Features
- 0–10 VDC proportional control signal for precise modulating operation
- 24V supply voltage for compatibility with standard BAS and HVAC control panels
- 62 in-lb torque output for reliable actuation of commercial dampers and valve assemblies
- Spring return (S/R) fail-safe mechanism ensures the actuator returns to a defined safe position upon loss of power
- Proportional/linear control (PLC) for smooth, stepless positioning
- Robust Siemens Building Technology construction for long service life in commercial and industrial environments
- Compact design for straightforward installation and integration
Typical Applications
- VAV and constant-volume air handling unit damper control
- Chilled water and hot water valve actuation
- Building automation system (BAS) integration
- PLC-based HVAC control panels
- Commercial and industrial HVAC systems requiring fail-safe operation
Product Specifications
- SKU: GMA161.1P
- Brand: Siemens Building Technology
- Control Signal: 0–10 VDC
- Supply Voltage: 24V
- Torque: 62 in-lb
- Actuator Type: Spring Return (S/R)
- Control Mode: Proportional/Linear Control (PLC)
Why Choose the Siemens GMA161.1P?
Siemens Building Technology has a long-standing reputation for precision-engineered actuators that meet the rigorous demands of commercial HVAC and building automation. The GMA161.1P’s spring return design provides critical fail-safe protection, while its 0–10 VDC proportional input ensures compatibility with virtually all modern BAS controllers. With 62 in-lb of torque, it handles a wide range of damper and valve sizes, making it a versatile choice for new construction and retrofit projects alike.







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