SQM50.361R1A Siemens Damper Motor

Overview

The Siemens SQM50.361R1A is a high-precision reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves in medium to large capacity oil and gas burners. As part of the SQM5 series, this motor is engineered for applications requiring high modulating accuracy and repeatability. It features a robust design suitable for industrial environments and can be mounted in any position, providing significant installation flexibility for complex burner systems.

Features

• High modulating accuracy with limited drive shaft play and 250 repositions through 90 degrees of travel
• Internal auto/manual selector switch and manual forward/reverse toggle switch for easy adjustments and commissioning
• Externally visible shaft position indicator for simplified monitoring
• Low hysteresis operation utilizing a double-offset drive and potentiometer gearing
• Integrated disengagement clutches for the drive shaft and cam drum to facilitate manual setup
• Field-reversible rotational direction, though this specific model defaults to counterclockwise (CCW) operation
• Durable construction with internal switches that are easily accessible for field configuration

Specifications

• Model: SQM50.361R1A
• Torque: 140 lb-in (15 Nm)
• Running Time: 12 seconds for 90-degree rotation (at 60 Hz)
• Operating Voltage: 110-120 Vac, 50/60 Hz
• Input Control: Position proportional (via AGA56.1A97 internal circuit board)
• Number of Switches: 8 total (2 limit switches and 6 auxiliary switches)
• Shaft: 10 mm round single-ended shaft
• Rotational Direction: Counterclockwise (CCW)
• Approvals: UL recognized, CSA certified, and CE approved

Applications

• Load-dependent control of combustion air volume in industrial burner systems
• Precise regulation of gas and oil flow in medium to large capacity burners
• Positioning of dampers and butterfly valves in HVAC and boiler applications
• Integration with 3-position or modulating controllers and Siemens burner controls like the LMV5 series
• Industrial rotary motion applications requiring high repeatability and reliable safety shut-off functions