SQM50.464R1G3R Siemens Damper Motor

Overview

The Siemens SQM50.464R1G3R is a high-precision reversing actuator designed for the accurate positioning of air dampers, gas valves, and other components requiring rotary motion in burner applications. Engineered for both industrial and commercial use, this electromotive actuator is particularly well-suited for systems requiring high modulating accuracy and repeatability. It features a robust die-cast aluminum housing and a modular design that allows for field-exchangeable circuit boards and potentiometers to meet specific system requirements.

Features

• Reversing actuator providing field-reversible clockwise or counterclockwise operation
• Internal auto/manual selector switch and manual forward/reverse toggle switch for easy commissioning and adjustment
• Equipped with six internal, easily adjustable auxiliary switches for flexible control logic
• Modular design supports exchangeable electronic circuit boards for various input signals and functions
• Visible external position indication for quick status monitoring
• Drive shaft and camshaft can be manually disengaged from the gear and motor for maintenance or setup
• Maintenance-free gearwheels and bearings ensure long-term reliability

Specifications

• Model: SQM50.464R1G3R
• Operating Voltage: 110-120 VAC (50/60 Hz)
• Torque: 140 lb-in (15 Nm)
• Running Time: 25 seconds for 90 degrees at 60 Hz (30 seconds at 50 Hz)
• Control Input: 4 to 20 mA
• Potentiometer: 1000 Ohm, 90-degree rotation
• Rotation: Clockwise (CW)
• Shaft: 3/8 inch (9.5 mm) square shaft
• Protection Rating: NEMA 4 (when using appropriate cable glands)
• Approvals: UL, CSA, and CE certified

Applications

• Positioning of air and gas dampers in medium to large capacity oil and gas burners
• Load-dependent control of combustion air, fuel volume, and gas flow
• Precise modulating control for industrial process heating and boiler systems
• Integration with 3-position or modulating controllers and burner control systems
• Actuation of flow control valves, butterfly valves, or any equipment requiring rotary positioning