SQM56.664R1G3R Siemens Damper Motor

Overview

The Siemens SQM56.664R1G3R is a high-precision reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves. Engineered for industrial and commercial burner applications, this robust damper motor provides reliable rotary motion and is particularly well-suited for systems requiring a high degree of modulating accuracy and repeatability. Its modular design allows for significant flexibility, featuring exchangeable circuit boards and adjustable internal switches to meet specific system requirements.

Features

• High-torque performance with a rating of 400 in-lbs
• Integrated 4-20 mA modulating control signal input
• Equipped with six internal, easily adjustable auxiliary and limit switches
• Clockwise (CW) rotation direction (field-reversible if needed)
• Robust construction with a 3/8-inch square dual-ended shaft for versatile mounting
• Disengagement clutches for the drive shaft and cam drum to facilitate manual adjustments
• Built-in auto/manual selector switch and manual forward/reverse toggle switch
• Externally visible position indicator for easy status monitoring

Specifications

• Model: SQM56.664R1G3R
• Operating Voltage: 110-120 VAC (50/60 Hz)
• Torque Output: 400 in-lbs (45 Nm)
• Running Time: 50 seconds for 90-degree rotation (at 60 Hz)
• Control Signal: 4-20 mA DC input
• Potentiometer: 1000 Ohm, 90-degree
• Shaft Type: 3/8-inch square, dual-ended
• Protection Rating: NEMA 4 (when properly installed)
• Operating Temperature: -5 F to 140 F (-20 C to 60 C)
• Approvals: UL and CSA certified

Applications

• Precise control of air and gas dampers in industrial burner systems
• Positioning of flow control, butterfly, and large fuel-air ratio valves
• High-demand HVAC systems requiring accurate modulation and repeatability
• Integration into complex combustion control systems like the Siemens LMV series
• Replacement for competitive actuators in existing boiler or furnace installations