SQM50.264R1A3 Siemens Damper Motor

Overview

The Siemens SQM50.264R1A3 is a high-precision reversing actuator designed for the accurate positioning of air dampers and flow control valves in industrial and commercial burner systems. Engineered for reliability and repeatable performance, this electromotive actuator is particularly well-suited for applications requiring a high degree of modulating accuracy. It features a robust design that allows for mounting in any position and includes an integrated auto/manual selector switch to simplify commissioning and maintenance.

Features

• High-precision gear train with low hysteresis for accurate control
• Equipped with two limit switches and up to four adjustable internal auxiliary switches
• Integrated auto/manual selector and forward/reverse toggle switch for easy manual adjustments
• Externally visible shaft position indicator for rapid status monitoring
• Field-reversible rotational direction, though typically configured for counterclockwise (CCW) operation
• Disengagement clutches for the drive shaft and cam drum to facilitate manual alignment
• Durable construction suitable for a wide range of industrial environments

Specifications

• Torque: 90 in-lbs
• Running Time: 8 seconds for 90 degree rotation (at 60 Hz)
• Operating Voltage: 110-120 Vac (50/60 Hz)
• Shaft Type: 3/8 inch square dual-ended shaft
• Control Type: Position proportional or floating control
• Feedback: Integrated 90 degree potentiometer (ASZ series)
• Rotational Direction: Counterclockwise (CCW)
• Approvals: UL recognized, CSA certified, and CE approved

Applications

• Positioning of air and gas dampers in burner control systems
• Actuation of flow control valves and butterfly valves
• Precise modulating control in industrial process heating
• Dual fuel applications requiring separate high fire, low fire, and ignition positions
• HVAC and boiler systems requiring reliable safety shut-off and air volume control