Siemens SQN90.240B2793 Servo Motor Damper Actuators

Description:

The Siemens SQN90.240B2793 servo motor damper actuator is used in burner control and combustion air regulation systems. Commonly installed in gas and oil burners, HVAC systems, and industrial furnace equipment. Maintenance teams, OEMs, and system integrators use this part for replacement, retrofit, and precise air-to-fuel ratio control in combustion processes.

Applications:

The Siemens SQN90.240B2793 is used to control air dampers and fuel valves in combustion systems for small to medium capacity burners. It is widely applied in industrial boilers, furnaces, HVAC heating systems, and process heating applications where accurate modulation of combustion air and fuel is required for efficiency, safety, and emissions control.

Technical Specifications:

• Manufacturer Part Number (MPN): SQN90.240B2793
• Product Type: Servo Motor Damper Actuator
• Series: SQN9
• Supply Voltage: 220–240 V AC, 50–60 Hz
• Power Consumption: Approx. 6–8 VA
• Torque: 2.4 Nm
• Rotation Angle: 90°
• Runtime: ~12 seconds for 90° rotation
• Direction of Rotation: Counterclockwise
• Control Type: 1-wire, 2-wire, or 3-position control
• Internal Configuration: 2 relays, multiple switches
• Mounting Type: Burner-mounted actuator
• Weight: Approx. 0.55–0.8 kg

Common Replacements:

• Siemens SQN90.570A2793
• Siemens SQN90.240B2799
• Honeywell M7284 Series Damper Actuator