Siemens GMA121.1P Spring Return Damper Actuator 2-Position 24V 62 lb-in

The Siemens GMA121.1P OpenAir GMA Series Electric Damper Actuator is a direct-coupled, spring return rotary actuator designed for two-position control of building HVAC dampers. This plenum-rated actuator delivers 62 lb-in (7 Nm) of torque with a 90-second run time, making it ideal for constant or variable air volume installations.

Key Features:

• Spring return design for fail-safe operation during power failures
• Brushless DC motor technology with built-in stall protection
• Dual voltage compatibility: 24 Vac/dc operation
• Unique self-centering shaft coupling for easy installation
• Manual override capability for maintenance and testing
• Mechanical range adjustment with 5° preload from factory
• Plenum-rated construction for air handling applications
• UL and cUL listed, CE certified

Applications:

Perfect for controlling return air, mixed air, exhaust, and face and bypass dampers in commercial HVAC systems requiring up to 62 lb-in of torque. The spring return feature ensures the damper automatically returns to a predetermined fail-safe position when power is lost, providing critical system protection.

Specifications:

• Torque: 62 lb-in (7 Nm)
• Supply Voltage: 24 Vac/dc
• Control Type: 2-position (on/off)
• Run Time: 90 seconds
• Power Consumption: 5 VA
• Rating: Plenum rated