SQM41.264A21SC Siemens Actuator

Overview

The Siemens SQM41.264A21SC is a high-precision electromotoric actuator designed for the accurate positioning of air dampers, gas dampers, and flow control valves in burner applications. This robust servo motor is engineered for use in industrial and commercial HVAC systems, providing reliable load-dependent control of gas, oil, and combustion air. Encased in a durable NEMA 4 weatherproof housing, it is built to withstand harsh environments while offering flexible mounting options without the need for additional weather shields.

Features

• Clockwise rotation (CW) design specifically engineered for rotary motion applications
• NEMA 4 rated enclosure provides superior protection against dust and moisture
• Integrated drive shaft disengagement clutch allows for manual adjustment and commissioning
• Features four adjustable internal auxiliary switches for advanced signaling and control logic
• Internal position indicator allows for easy monitoring of the current damper or valve state
• Robust die-cast aluminum lower housing with an impact-proof and heat-resistant plastic cover
• Compatible with 3-position or modulating controllers for versatile system integration

Specifications

• Model Number: SQM41.264A21SC
• Operating Voltage: 230V AC (50/60 Hz)
• Torque: 90 in-lb (10 Nm)
• Running Time: 30 seconds for 90 degrees
• Rotation Direction: Clockwise (CW)
• Control Type: Line 3-position / Step control
• Shaft Type: 3/8 inch Square Shaft
• Shaft Diameter: 10 mm
• Approval Ratings: CE, UL, and CSA approved

Applications

• Precise control of air and gas dampers in medium to high-capacity burners
• Positioning of butterfly valves and oil pressure controllers in thermal process plants
• Load-dependent regulation of combustion air, gas, and oil flow in industrial ovens
• Ideal for HVAC systems requiring high turndown and reliable ignition through auxiliary switch signaling
• Suitable for replacement of competitive actuators in existing burner control configurations