SQM40.241A11SC Siemens Actuator

Overview

The Siemens SQM40.241A11SC is a high-performance electromotoric modulating actuator designed for the precise positioning of flow control valves, butterfly valves, and dampers. Engineered for industrial and commercial burner systems, it provides reliable, load-dependent control of gas, oil, or combustion air. This actuator is built for durability and flexibility, featuring a synchronous motor and a robust NEMA 4-rated enclosure suitable for demanding environments.

Features

• Modulating control input accepts 4-20 mA and 135 ohm signals for seamless system integration
• Counterclockwise rotation with a 90-degree range designed for specific mounting configurations
• Integrated shaft disengagement clutch enables easy manual adjustment and alignment
• Maintenance-free gear train and bearings provide long-term operational stability
• Internal position indication and adjustable auxiliary switches allow for precise status monitoring
• Weatherproof NEMA 4 enclosure ensures protection against environmental elements without additional shields

Specifications

• Model: SQM40.241A11SC
• Torque: 90 in-lb (10 Nm)
• Running Time: 30 seconds for 90-degree rotation at 60 Hz
• Operating Voltage: AC 110 V (50/60 Hz)
• Shaft: 10mm keyed shaft
• Control Inputs: 4-20 mA, 135 ohm
• Protection Class: NEMA 4 / IP66
• Certifications: CE approved

Applications

• Control of combustion air, gas, and oil flow in medium to large-capacity industrial burners
• Precise positioning of butterfly valves in HVAC and boiler management systems
• Rotary motion applications in thermal process plants and industrial furnaces
• Integration with Siemens burner controls such as the LME7 series for optimized combustion performance