SQM50.460R1A3 Siemens Damper Motor

Overview

The Siemens SQM50.460R1A3 is a high-precision reversing actuator designed to drive air and gas dampers, flow control valves, and butterfly valves. Engineered for oil and gas burners of medium to large capacity, this robust actuator provides reliable, load-dependent control of combustion air, gas, and oil volumes. Its die-cast aluminum housing and impact-resistant plastic covers ensure durability in demanding industrial environments, while its synchronous motor and backlash-free gearing offer exceptional modulating accuracy and repeatability.

Features

• Reversing motor with counter-clockwise (CCW) rotation and potentiometer feedback for precise positioning
• Two limit switches and four internal auxiliary switches for extensive control flexibility
• Drive shaft and cam drum disengagement clutches for easy manual adjustment
• Integrated auto/manual switch and manual control forward/reverse toggle
• Low hysteresis design with a double-offset drive for high rotational resolution
• Maintenance-free gear train and synchronous motor for long-term service life
• Externally visible shaft position indicator for quick status monitoring

Specifications

• Model: SQM50.460R1A3
• Operating Voltage: 110-120 VAC (50/60 Hz)
• Torque: 140 lb-in (Nominal)
• Running Time: 25 seconds for 90 degrees at 60 Hz (30 seconds at 50 Hz)
• Number of Switches: 6 (2 limit, 4 auxiliary SPDT switches)
• Rotation Direction: Counter-clockwise (CCW)
• Shaft Type: No shaft included (designed for separate shaft installation)
• Feedback: Potentiometer feedback included
• Protection Rating: IP54 (NEMA 12)

Applications

• Positioning of air and gas dampers in industrial burner systems
• Control of flow valves and butterfly valves for combustion regulation
• Load-dependent control for oil and gas burners of medium to larger capacity
• Integration with 3-position or modulating controllers in HVAC and boiler applications
• Precise modulation in any mounting position for industrial process control