GQD321.1A Damper Motor 240V 2Nm 2 Position Spring Return

The Siemens GQD321.1A is a compact, spring return damper actuator designed for reliable open/close control in HVAC air distribution systems. Built for performance and durability, it delivers consistent operation in ventilation and air conditioning applications where safe positioning during power loss is essential. Engineered with a robust motor and integrated spring return mechanism, the actuator automatically drives the damper to its fail-safe position when power is interrupted. This ensures dependable airflow control and system protection across residential, commercial, and light industrial environments. Key Benefits Reliable spring return function – Automatically returns to the defined safety position during power failure 240V AC operation – Suitable for standard mains-powered HVAC systems 2-position control – Simple open/close functionality for straightforward system integration Compact and durable design – Built for long-term performance with minimal maintenance Consistent torque output – Ensures smooth and stable damper operation Applications Ideal for use in: Zone control dampers Ventilation systems Air conditioning units HVAC airflow regulation in ducts Technical Overview Operating voltage: 100–240V AC Control type: Open / Close (2-position) Torque: 2 Nm Spring return: Yes (fail-safe function) Rotation angle: 90° Mounting: Direct coupling to damper shaft Installation & Compatibility The GQD321.1A features a modern direct-coupled mounting system, allowing for quick installation on standard damper shafts. It is suitable for retrofit applications, though older actuators may require minor mounting adjustments due to differences in bracket and shaft coupling design.