SQM50.361R1A3 Siemens Damper Motor

Overview

The Siemens SQM50.361R1A3 is a high-precision reversing actuator designed for the accurate positioning of air dampers, flow control valves, butterfly valves, and other components in industrial and commercial burner systems. Part of the SQM5 series, this electromotive actuator is engineered for applications requiring high modulating accuracy and repeatability. It features a robust die-cast aluminum housing and a reversible synchronous motor, making it suitable for demanding HVAC and combustion environments.

Features

• Reversing motor with adjustable cams for precise stroke control
• Built-in 1000 Ohm feedback potentiometer with a 90-degree range for position monitoring
• Internal auto/manual selector switch and manual forward/reverse toggle for easy field adjustments
• Disengagement clutches for the drive shaft and cam drum to allow for manual operation
• Externally visible position indicator for quick status checks
• Supports multiple mounting positions for installation flexibility
• Field-exchangeable circuit boards for various control functions

Specifications

• Model: SQM50.361R1A3
• Torque: 140 lb-in (16 Nm)
• Running Time: 12 seconds for 90 degrees (at 60 Hz)
• Operating Voltage: 110V – 120V AC
• Rotation: Counter-clockwise (CCW) default, field reversible
• Shaft Diameter: 10 mm
• Switches: Includes two limit switches and up to four internal auxiliary switches
• Protection Rating: NEMA 4 or IP54 (depending on configuration)

Applications

• Positioning of air and gas dampers in burner control systems
• Actuation of flow control and butterfly valves for fuel-air ratio control
• Variable air volume (VAV) and constant air volume (CAV) installations
• Integration with Siemens LMV5 burner management systems
• Industrial combustion applications requiring precise modulating control