SQM40.265R11SC Siemens Actuator

Overview

The Siemens SQM40.265R11SC is a precision electromotoric actuator designed for the positioning of flow control valves, butterfly valves, dampers, or other applications requiring rotary motion. Engineered primarily for industrial and commercial burner systems, this actuator provides reliable load-dependent control of gas, oil, and combustion air. It features a robust design with a die-cast aluminum lower housing and an impact-proof plastic cover, ensuring durability in demanding HVAC and thermal process environments.

Features

• Self-contained unit with a synchronous motor and gear train
• Drive shaft can be manually disengaged for quick alignment and maintenance
• Internal position indication and adjustable cam switches for precise control
• NEMA 4 weatherproof enclosure provides protection in harsh conditions
• UL and CSA approved for North American safety standards
• Counterclockwise (CCW) rotation with high torque output

Specifications

• Model: SQM40.265R11SC
• Operating Voltage: 110V – 120V AC (50/60 Hz)
• Torque: 90 in-lb (10 Nm)
• Running Time: 30 seconds for 90 degrees
• Direction of Rotation: Counterclockwise (CCW)
• Shaft Type: 10mm D-Shaft
• Control Type: Line 3-position (3P) step control
• Potentiometer: Single potentiometer (1 pot) included

Applications

• Load-dependent control of gas, oil, and combustion air in industrial burners
• Positioning of butterfly valves and air dampers in thermal process plants
• Emergency shutdown systems in HVAC and commercial heating applications
• Integration with Siemens burner management systems such as the LMV series