SQM56.664R1G3 Siemens Damper Motor

Overview

The Siemens SQM56.664R1G3 is a high-torque, reversing electromotive actuator designed to precisely position air dampers, flow control valves, and other equipment in industrial burner and HVAC systems. As part of the SQM5 series, this robust damper motor is engineered for durability and high modulating accuracy, featuring a reversible motor that allows for flexible control of rotary motion. It is specifically built for heavy-duty applications requiring reliable performance under significant load.

Features

• Reversing motor with adjustable internal switches for precise travel limit control
• Integrated auto/manual toggle switch to facilitate easy installation and field adjustments
• Externally visible position indicator for at-a-glance monitoring of shaft orientation
• Low-hysteresis gear train with double-offset drive and potentiometer gearing for superior repeatability
• Flexible mounting options with a wide selection of exchangeable shafts and mounting brackets
• Maintenance-free gearwheels and bearings ensuring long-term service life

Specifications

• Model: SQM56.664R1G3
• Torque: 400 in-lb (45 Nm)
• Running Time: 50 seconds for 90-degree travel
• Input Signal: 4-20 mA modulating control
• Supply Voltage: 110-120 VAC, 50/60 Hz
• Rotation Direction: Counter-clockwise (CCW) standard
• Shaft Type: 3/8 inch square shaft
• Auxiliary Switches: Up to 6 internal switches
• Protection Rating: NEMA 4 / IP54 (when properly installed)

Applications

• Precise control of air and gas dampers in industrial burner systems
• Positioning of flow control valves and butterfly valves
• Use with large air handling units and rooftop units in commercial HVAC
• Integration with Siemens burner management systems like the LMV series
• Heavy-duty industrial applications requiring high-torque rotary modulation