Siemens GMA166.1U Modulating Spring Return Damper Actuator 24V 62 lb-in

The Siemens GMA166.1U is a modulating spring return damper actuator designed for commercial HVAC control applications. This electronically controlled actuator provides precise positioning of dampers with 62 lb-in (7 Nm) of torque output and operates on 24V AC/DC power.

Key Features:

• 0-10 VDC analog control signal input for modulating control
• Spring return mechanism for fail-safe positioning during power loss
• Built-in auxiliary switch for status indication
• Integrated position feedback for closed-loop control
• 62 lb-in (7 Nm) torque output for damper control
• 24V AC/DC universal voltage operation
• Compact design for easy installation in tight spaces
• Manual override capability for testing and commissioning

This actuator is ideal for VAV boxes, air handling units, economizer dampers, and other commercial HVAC applications requiring reliable modulating control with spring return safety positioning. The integrated feedback and auxiliary switch provide complete system integration with building automation systems.