SQM50.461R1A3 Siemens Damper Motor

Overview

The Siemens SQM50.461R1A3 is a high-precision reversing actuator designed for the accurate positioning of air and gas dampers, flow control valves, and butterfly valves in industrial and commercial burner applications. Engineered for reliability, this electromotive actuator provides robust torque and repeatable performance, making it a critical component for modulating control in combustion systems. It features a reversible synchronous motor and is particularly well-suited for applications requiring high accuracy and repeatability.

Features

• High modulating accuracy with minimal drive shaft play
• Integrated auto/manual selector switch and manual forward/reverse toggle switch for easy commissioning and adjustment
• Reversible and locking-proof synchronous motor for durable operation
• Adjustable internal limit and auxiliary switches (up to six) for precise control sequences
• Disengageable drive shaft and camshaft via separate clutches for quick alignment
• Externally visible position indicator for easy monitoring
• Impact-proof and heat-resistant plastic covers with a die-cast aluminum housing for protection in demanding environments

Specifications

• Model: SQM50.461R1A3
• Operating Voltage: 110V – 120V AC (50/60 Hz)
• Torque: 140 in-lbs (approx. 15 Nm)
• Running Time: 25 seconds for 90 degree travel (at 60 Hz)
• Rotation: Counter-clockwise (CCW)
• Drive Shaft: 10 mm round shaft
• Feedback: Integrated 1000 Ohm potentiometer feedback for 90 degree rotation
• Control Type: Position proportional or floating control
• Protection Rating: IP54 (NEMA 1, 2, 3, 3R, 3S, 5, 12, 13)

Applications

• Positioning of air and gas dampers in large industrial burners
• Control of flow control valves and butterfly valves in combustion trains
• Precise modulation in HVAC boiler systems and furnace applications
• Replacement of competitive actuators in existing burner control configurations
• Use in dual-fuel systems to create separate high fire, low fire, and ignition positions