SQM53.482A2 Siemens Damper Motor

Overview

The Siemens SQM53.482A2 is a high-precision electromotive damper actuator designed to drive air and gas dampers in oil and gas burners of medium to large capacity. Engineered for reliability and accuracy, this reversing actuator provides load-dependent control of fuel and combustion air volumes. It features a robust die-cast aluminum housing and impact-resistant plastic covers, making it suitable for demanding industrial and commercial heating environments. The SQM53 series is particularly valued for its high modulating accuracy and repeatability, often enhancing the overall performance and product quality of the processes it supports.

Features

• Reversible and locking-proof synchronous motor ensures consistent operation
• Internal and external position indication for easy monitoring
• Six to eight easily accessible and adjustable internal microswitches
• Separate disengagement of drive shaft and camshaft for simplified maintenance and adjustment
• Low hysteresis design with double-offset drive and potentiometer gearing for precise control
• Auto/manual switch allows for convenient field adjustments
• Durable construction with IP54 protection rating

Specifications

• Model: SQM53.482A2
• Operating Voltage: AC 220-240 V (50/60 Hz)
• Rated Torque: 20 Nm (approx. 200 in-lbs)
• Holding Torque: 20 Nm
• Running Time: 30 seconds for 90 degree rotation (50 Hz)
• Drive Shaft: 12 mm diameter with Woodruff key
• Rotation: Counterclockwise (standard)
• Auxiliary Switches: 8
• Temperature Range: -20 C to +60 C

Applications

• Load-dependent control of gas flow, oil volume, and combustion air volume in burner systems
• Positioning of flow control valves, butterfly valves, and dampers
• Integration with 3-position or modulating controllers (e.g., 4-20 mA) in HVAC systems
• Direct control by burner control units in industrial process heating and package burners
• Suitable for use in furnace burners, indirect air heaters, and tube firing burners