SQM40.264R11SC Siemens Actuator

Overview

The Siemens SQM40.264R11SC is a high-performance electromotoric actuator designed for the precise positioning of flow control valves, butterfly valves, and dampers in burner applications. This counterclockwise-rotating motor is engineered for use in medium to high-capacity oil and gas burners, providing reliable, load-dependent control of combustion air and fuel. As a North American version, it features UL and CSA certification and includes a specific “R” suffix indicating suitability for flexible conduit connections.

Features

• Counterclockwise (CCW) direction of rotation
• Integrated electronic version with line 3-position step control
• Manual drive shaft disengagement via a coupling pin for quick alignment
• Adjustable cams and internal position indication for easy calibration
• Die-cast aluminum lower housing with an impact-proof, heat-resistant plastic cover
• NEMA 4 rated enclosure providing protection against weather and environmental factors
• Maintenance-free synchronous motor with stall-proof design

Specifications

• Model: SQM40.264R11SC
• Operating Voltage: AC 110 V (50/60 Hz)
• Torque: 90 in-lb (10 Nm)
• Running Time: 30 seconds for 90 degrees
• Rotation: Counterclockwise (CCW)
• Drive Shaft: 3/8 inch Square Shaft
• Control Type: Line 3P-Step
• Approvals: UL and CSA certified
• Protection Class: NEMA 4 / IP66

Applications

• Load-dependent control of gas, oil, and combustion air flow
• Driving butterfly valves and dampers in industrial and commercial burner systems
• Use in thermal process plants requiring high turndown and rotary motion
• Integration with 3-position or modulating controllers and Siemens burner controls like the LME series