SQM41.271R10SC Siemens Actuator

Overview

The Siemens SQM41.271R10SC is a high-precision electromotoric actuator designed for the accurate positioning of air dampers and fuel control valves in industrial and commercial burner systems. As part of the SQM4 series, this clockwise-rotating actuator provides reliable, load-dependent control of gas, oil, and combustion air flow. It is specifically engineered to work in conjunction with burner controls to ensure optimal combustion efficiency and safety in thermal process plants and boiler systems.

Features

• Clockwise (CW) rotation for precise valve and damper modulation
• Internal position indication with adjustable cams for easy calibration of switching points
• Drive shaft disengagement clutch allowing for manual adjustment during setup or maintenance
• Robust construction featuring a die-cast aluminum lower housing and impact-resistant plastic cover
• High-resolution performance suitable for both 3-position and modulating control applications
• Integrated auxiliary switches for expanded control functionality and status signaling

Specifications

• Model: SQM41.271R10SC
• Torque: 90 in-lb (10 Nm)
• Running Time: 30 seconds for 90 degree rotation
• Operating Voltage: 110V AC (50/60 Hz)
• Rotation Direction: Clockwise
• Shaft Type: 10mm Keyed Shaft
• Switching: 2-position basic version
• Enclosure Rating: Designed to meet NEMA 4 requirements
• Certifications: UL and CSA approved

Applications

• Control of combustion air dampers in medium to high-capacity burners
• Load-dependent flow control for oil and gas valves
• Integration with Siemens burner control systems like the LME and LMV series
• Rotary motion applications in thermal process plants and HVAC systems
• Precision positioning for industrial butterfly valves and pressure controllers