SQM41.261R11SC Siemens Actuator

Overview

The Siemens SQM41.261R11SC is a robust electromotoric actuator designed for the precise positioning of air and gas dampers, butterfly valves, and flow control valves. It is engineered for clockwise (CW) rotation and features a synchronous motor that ensures consistent performance in medium to high-capacity burner systems. This actuator is particularly suitable for thermal process plants where load-dependent control of combustion air, gas, or oil is critical for operational efficiency and safety.

Features

• Clockwise (CW) direction of rotation with a 90-degree operating angle
• Stall-proof synchronous motor provides reliable torque and timing
• Manual drive shaft disengagement via a coupling pin for quick alignment during installation
• Internal position indicator and adjustable cams for precise switching point control
• NEMA 4/IP66 rated housing for protection against dust and water in industrial environments
• Integrated auxiliary switches (3-position/line 3P-step) for enhanced control flexibility
• UL and CSA approved for use in North American markets with flexible conduit connections

Specifications

• Model: SQM41.261R11SC
• Operating Voltage: AC 110 V – 120 V (50/60 Hz)
• Torque: 10 Nm (90 in-lb)
• Running Time: 30 seconds for a 90-degree turn (at 60 Hz)
• Shaft Type: 10mm keyed shaft (Woodruff key)
• Power Consumption: 10 VA
• Operating Temperature: -20 C to +60 C
• Rotation: Clockwise (CW)
• Housing Material: Die-cast aluminum lower part with impact-proof plastic cover

Applications

• Load-dependent control of gas, oil, and combustion air in industrial burners
• Precise positioning of air and gas dampers in HVAC systems
• Driving flow control and butterfly valves in thermal process plants
• Integrated use with 3-position or modulating controllers for complex combustion cycles
• Replacement for competitive actuators in burner systems requiring high turndown and reliable ignition