SQM50.264R1G3 Siemens Damper Motor

Overview

The Siemens SQM50.264R1G3 is a high-precision reversing actuator designed for the accurate positioning of dampers, butterfly valves, and flow control valves. Engineered for industrial and commercial combustion applications, this damper motor features a robust design that ensures repeatability and modulating accuracy. It is a critical component in burner systems, often used in conjunction with burner controls to manage air and fuel ratios effectively.

Features

• High modulating accuracy and rotational resolution with low hysteresis
• Integrated auto/manual selector switch and manual forward/reverse toggle switch for simplified commissioning
• Up to six internal, easily adjustable auxiliary and limit switches for versatile control configurations
• Drive shaft and cam drum disengagement clutches for quick manual alignment
• Externally visible position indicator for easy status monitoring
• Field-reversible clockwise or counterclockwise operation
• Impact-resistant and heat-resistant plastic housing for durability in demanding environments

Specifications

• Model: SQM50.264R1G3
• Operating Voltage: 110-120 VAC (50/60 Hz)
• Torque: 90 lb-in (10 Nm)
• Running Time: 8 seconds for 90 degree rotation
• Input Control Signal: 4-20 mA
• Shaft Type: 3/8 inch square, dual-ended
• Rotation Direction: Counterclockwise (CCW) default
• Number of Switches: 6 (including 2 limit and 4 auxiliary)
• Operating Temperature: -4 F to 140 F (-20 C to 60 C)
• Protection Rating: NEMA 1, 2, 3, 3R, 4, 12, and 13 (depending on mounting)

Applications

• Positioning of air and gas dampers in industrial burners
• Control of flow control valves and butterfly valves in HVAC systems
• Ideal for applications requiring high-precision modulation and repeatability
• Used in dual-fuel systems to create separate ignition and firing positions
• Suitable for use in boiler systems, furnaces, and large-capacity burners