Siemens SQM50.364R1G3 Modulating Damper Motor

Siemens SQM50.364R1G3 is a modulating damper motor designed for HVAC and burner-damper applications, delivering 10 N·m (90 in-lb) of torque to move a damper through a 0–90° range in about 15 seconds. It operates from AC 110 V and draws roughly 20 VA, with a 4–20 mA feedback signal to integrate into building automation controllers. The actuator uses a 9.5 mm diameter shaft and includes six switch contacts to support configurable positioning, and it is UL-listed for safety. Designed for direct mounting with compatible SQM50 dampers and Siemens mounting accessories, this unit is commonly employed to modulate combustion air dampers on boilers and burner management systems as part of precise air-to-fuel control and energy-efficient operation, suitable for a range of boiler and HVAC installations where reliable, repeatable damper positioning is required.