Description
The Siemens Building Technology GMA166.1U is a precision-engineered spring-return damper actuator designed for demanding commercial and industrial HVAC applications. Powered by a 24V supply and accepting a 0–10 VDC proportional control signal, this actuator delivers accurate, reliable modulating control of dampers in air handling units, VAV systems, and building automation applications.
Key Features
- 0–10 VDC proportional control signal for precise modulating operation
- Spring-return (S/R) fail-safe design — returns to closed position on power loss
- 24V AC/DC power supply for broad system compatibility
- Integrated auxiliary switch for end-position signaling and interlock control
- Built-in position feedback signal for closed-loop BAS integration
- Designed for use in commercial building automation and HVAC control systems
- Siemens Building Technology quality construction for long service life
Application
The GMA166.1U is ideally suited for controlling dampers in air handling units, economizers, mixed-air systems, and VAV terminal units where fail-safe spring-return operation is required. The 0–10 VDC input allows seamless integration with direct digital control (DDC) systems and building automation controllers. The onboard auxiliary switch enables status monitoring or interlock functions, while the position feedback output supports closed-loop control strategies.
Why Choose Siemens Building Technology
Siemens Building Technology actuators are trusted by mechanical contractors, building automation engineers, and HVAC professionals worldwide. The GMA166.1U combines robust construction with flexible control options, making it a reliable choice for new construction and retrofit projects alike.
Specifications
- Model: GMA166.1U
- Control Signal: 0–10 VDC (proportional)
- Operation: Spring Return (fail-safe)
- Supply Voltage: 24V AC/DC
- Features: Auxiliary switch and position feedback
- Brand: Siemens Building Technology
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