Siemens SQN72.6A4A20BT actuator

Siemens SQN72.6A4A20BT actuator — air damper control for Baltur burners. Siemens SQN72.6A4A20BT is a reversible air damper actuator developed specifically for Baltur burner devices. It provides precise regulation of the air-to-fuel ratio in the combustion mixture — a key factor for high efficiency, economy, and safe burner operation at any power level. Application: The actuator is used in automatic fuel and gas supply systems for medium- and low-power Baltur burners. The main function is to change the air damper position for optimal air supply when creating the combustion mixture, which increases combustion efficiency and boosts the heating system's efficiency. Depending on the load, the actuator operates under the control of a burner automation unit or together with one-, two-wire control or a three-position regulator. Main technical specifications: Power supply: 220 V, 50/60 Hz. Torque: 2.5 Nm. Power consumption: 6 VA. Opening time for 90°: 30 seconds. Operating temperature range: -20…+60 °C. Maintenance-free reliable design: The actuator is equipped with a maintenance-free gearbox with a disengagement feature — re-engagement occurs automatically. The package includes easily adjustable end and auxiliary switches, internal position indication. The gear drive is treated with long-lasting lubricant, eliminating the need for mechanical maintenance. The housing is made of impact-resistant, heat-resistant material; dust and moisture do not penetrate inside the device. Choose Siemens SQN72.6A4A20BT: • German quality Siemens AG — world standard of reliability in burner automation • Special BT version — optimized for Baltur burners, confirmed