SQM50.264R1G3R Siemens Damper Motor

Overview

The Siemens SQM50.264R1G3R is a high-precision reversing actuator designed for the accurate positioning of dampers, butterfly valves, and flow control valves in burner and combustion applications. Part of the SQM5 series, this electromotive actuator is engineered for industrial and commercial environments requiring high repeatability and modulating accuracy. It features a robust die-cast aluminum housing and is specifically configured for clockwise (CW) rotation with a 3/8-inch square shaft, making it a reliable component for complex HVAC and process control systems.

Features

• Field-reversible design with clockwise (CW) rotational direction when facing the gear end
• Equipped with up to six internal, easily adjustable auxiliary and limit switches for flexible control
• Integrated auto/manual selector switch and manual forward/reverse toggle for easy onsite adjustments
• Low hysteresis gear train and double-offset drive ensure high rotational resolution
• Support for exchangeable circuit boards to provide functions like electronic linearization and split-range control
• Maintenance-free gearwheels and bearings housed in a durable, heat-resistant casing
• Externally visible position indicator for quick status monitoring

Specifications

• Model: SQM50.264R1G3R
• Operating Voltage: 110-120 VAC (50/60 Hz)
• Torque: 90 in-lbs (10 Nm)
• Running Time: 8 seconds for 90 degrees (at 60 Hz) / 10 seconds (at 50 Hz)
• Control Signal: 4-20 mA input (via AGA56.41A27 electronic module)
• Shaft Type: 3/8-inch square, double-ended shaft
• Rotation: Clockwise (CW)
• Protection Rating: IP54 (standard) / IP65 (with optional NEMA 4 kit)
• Operating Temperature: -20 C to +60 C

Applications

• Positioning of air dampers and fuel-to-air ratio control in industrial burners
• Control of butterfly valves and flow control valves for gas or oil combustion
• Use in modulating burner systems requiring high precision and repeatability
• Integration with Siemens burner controls such as the LMV5 or LME series
• Suitable for any HVAC or industrial application requiring reliable rotary motion and 4-20 mA signal feedback