Actuador Siemens «SQN70.424B20»

Siemens SQN70.424B20 actuator — universal solution for gas and liquid fuel burners. The Siemens SQN70.424B20 actuator is a reliable actuating device for automatic control of the air damper in burner systems. It automatically moves the damper, forming the optimal air-to-fuel ratio during ignition, purging, and stabilized combustion stages. The result is economical, safe, and stable operation of your equipment in any mode. The SQN70.424B20 model is the current replacement for the discontinued SQN70.424A20 and is fully compatible with it in terms of mounting and electrical parameters. Where it is used: The actuator is designed for low and medium power burners operating on gas or liquid fuel. It is used in boiler rooms, heat generators, process furnaces, and ventilation systems with adjustable dampers. Compatible with flame management systems and three-position controllers from leading manufacturers. Technical specifications: Power supply: 230 V (–15% / +10%), 50/60 Hz. Torque: 2.5 Nm. Power consumption: 6 VA. Adjustment range: 0–130°. Opening time to 90°: 12 seconds. Protection class: IP40. Weight: 0.4 kg. Design advantages: Reversible synchronous motor provides rotation in both directions. Built-in anti-jamming protection prevents rotor overheating when the damper freezes, and automatic braking prevents reverse impact on the gear train. Cam calibration is performed without removing the actuator. The design includes end and auxiliary switches with convenient manual adjustment, and built-in position indication simplifies operation. The device complies with EMC and Low Voltage directives, as well as GOST IEC for electromagnetic compatibility. Why choose this model