SQM50.264R1A0R Siemens Damper Motor

Overview

The Siemens SQM50.264R1A0R is a high-precision reversing actuator designed for the accurate positioning of flow control valves, butterfly valves, and air dampers in industrial and commercial burner applications. Engineered for durability and repeatable performance, this motor-driven actuator is a critical component for systems requiring proportional control to optimize combustion efficiency. It features a robust design capable of operating in any mounting position, making it a versatile solution for complex burner and boiler assemblies.

Features

• High modulating accuracy and rotational resolution for precise control
• Low hysteresis drive mechanism with double-offset gearing
• Auto/manual selector switch and manual forward/reverse toggle for easy adjustment and commissioning
• Externally visible shaft position indicator for quick status verification
• Six easily accessible internal switches, including two limit switches and four auxiliary switches
• Field-reversible operation for clockwise or counter-clockwise applications
• Disengagement clutches for the drive shaft and cam drum to facilitate manual alignment
• UL and CSA approved for safety and reliability in North American markets

Specifications

• Model: SQM50.264R1A0R
• Torque: 90 in-lb (10 Nm)
• Runtime: 8 seconds for 90 degree rotation (at 60 Hz)
• Operating Voltage: 110 V AC / 120 V AC
• Control Type: Position proportional
• Drive Direction: Clockwise (CW)
• Shaft Type: 3/8 inch square shaft
• Rotational Angle: 0 to 90 degrees (mechanically adjustable up to 95 degrees)
• Housing: Die-cast aluminum base with impact-resistant plastic cover

Applications

• Precise modulation of combustion air and fuel flow in industrial burners
• Positioning of dampers and flow control valves in boiler installations
• Control of return air, exhaust, and mixed air dampers in HVAC systems
• Replacement of competitive actuators in legacy burner control systems
• Industrial process heating applications requiring high turndown and reliable ignition timing