SQM50.464R1A3R Siemens Damper Motor

Overview

The Siemens SQM50.464R1A3R is a high-precision reversing actuator designed for the accurate positioning of air dampers, gas dampers, flow control valves, and butterfly valves in medium to large-capacity oil and gas burners. Engineered for industrial and commercial burner applications, this modulating rotary motor provides reliable air/fuel ratio management. It features a robust die-cast aluminum housing and is specifically configured for clockwise (CW) rotation when facing the drive shaft, ensuring precise control and repeatability in demanding HVAC and combustion environments.

Features

• High-torque performance providing 140 in-lbs of force for reliable damper and valve control
• Clockwise (CW) rotational direction (when facing the gear end) to suit specific mechanical configurations
• Integrated auto/manual toggle switch and manual forward/reverse switch for easier commissioning and adjustments
• Equipped with two limit switches and four internal adjustable auxiliary switches for flexible position signaling
• Low hysteresis gearing and a drive shaft disengagement clutch for enhanced precision and manual positioning
• UL recognized, CSA certified, and CE approved for compliance with international safety standards
• Visible external position indication for quick status monitoring

Specifications

• Model: SQM50.464R1A3R
• Operating Voltage: 110-120 VAC (50/60 Hz)
• Torque: 140 in-lb (16 Nm)
• Running Time: 25 seconds for 90-degree rotation at 60 Hz (30 seconds at 50 Hz)
• Control Signal: Position proportional control (AGA56.1A97 board)
• Shaft Type: 3/8 inch square, dual-ended shaft
• Feedback: 1000 Ohm potentiometer for 90-degree position feedback
• Ambient Temperature Range: -5°F to 140°F (-20°C to 60°C)
• Protection Rating: NEMA 4 (when appropriate conduit used) or IP54

Applications

• Load-dependent control of combustion air, gas, and oil volumes in industrial burners
• Precise positioning of butterfly valves and flow control valves in combustion trains
• Driving air dampers for fuel-to-air ratio control in boiler systems
• Suitable for use with modulating controllers in medium-to-large capacity heating and process plants
• Industrial furnace and thermal processing applications requiring high repeatability and accuracy