Siemens SQN30.121A1700 actuator

Siemens SQN30.121A1700 actuator — professional damper control at 110 V. The Siemens SQN30.121A1700 actuator is a specialized actuating device for precise positioning of air and gas dampers in liquid fuel and gas burners. It automatically adjusts the damper position during ignition, low-fire and high-fire operation, and combustion chamber purging — ensuring optimal fuel-air mixture at each stage. The key feature of the model is power supply from a 110 V network, making it indispensable where the corresponding electrical infrastructure is used. There are no alternatives with such characteristics among standard 220 V series. Where it is used: The actuator is designed for medium and low power burners operating on gas or liquid fuel, including Oilon burners. Positioning is performed together with flame management systems, P, PI, PID controllers, or 1-, 2-, 3-position controllers depending on the current burner output. Technical specifications: Power supply: 110 V, 50/60 Hz. Torque: 1.5 Nm. Power consumption: 6.5 W. Opening time to 90°: 4.5 seconds. Protection class: IP40. Weight: 0.7 kg. Design advantages: The actuator is equipped with a maintenance-free gearbox with a disengagement feature — the gear train can be easily disconnected for manual damper positioning without removing the actuator. End and auxiliary switches are adjusted easily and accurately without special tools. The compact housing made of heat-resistant plastic provides IP40 protection and resistance to impact loads and high temperatures in the burner area. Why choose this model: SQN30.121A1700 occupies a separate niche in the Siemens lineup: it is the only mod