SQM41.241A11SC Siemens Actuator

Overview

The Siemens SQM41.241A11SC is a high-precision electromotoric actuator designed for the modulating control of gas, oil, and combustion air flow. Engineered for medium to high-capacity burners and thermal process plants, this self-reversing actuator provides reliable rotary motion to drive butterfly valves, dampers, and oil pressure controllers. Its robust design ensures accurate positioning and long-term durability in demanding industrial and commercial HVAC environments.

Features

• Electromotoric drive providing precise load-dependent control
• Integrated electronic version with support for analog control signals
• Internal position indication for accurate monitoring
• Drive shaft can be manually disengaged for quick alignment and reengaged automatically
• Robust construction with a die-cast aluminum lower housing and impact-resistant plastic cover
• Clockwise rotation variant with high torque output
• Maintenance-free gear train with adjustable cams for switching point settings

Specifications

• Model: SQM41.241A11SC
• Operating Voltage: AC 110 V (50/60 Hz)
• Torque: 90 in-lb (approximately 10 Nm)
• Running Time: 30 seconds for 90 degree rotation
• Control Signals: 4-20 mA, 0-135 Ohm, or 2-10 VDC
• Rotation Direction: Clockwise (CW)
• Shaft Type: 10mm keyed shaft
• Enclosure Rating: NEMA 4 / IP66 (weatherproof)
• Approvals: CE, UL, and CSA listed

Applications

• Load-dependent control of combustion air, gas, and oil flow in industrial burners
• Positioning of flow control valves and butterfly valves in thermal process plants
• Modulating control for HVAC systems requiring high turndown ratios
• Use in connection with 3-position or modulating controllers and burner controls like the LME7 series