SQM40.165R11SC Siemens Actuator

Overview

The Siemens SQM40.165R11SC is a precision electromotoric actuator designed for the positioning of air and gas dampers, butterfly valves, and oil pressure controllers. Part of the SQM40 series, this actuator is engineered for high-demand industrial and commercial burner applications. It features a synchronous motor and a self-locking gear train, ensuring stable and reliable control of combustion air and fuel flow. The “R” suffix indicates the inclusion of a connection facility for flexible conduit, making it suitable for North American installations where UL and CSA compliance is required.

Features

• Counterclockwise (CCW) rotation direction
• Integrated synchronous motor provides consistent timing and torque
• Drive shaft can be manually disengaged from the motor for easy alignment and installation
• Internal position indication with adjustable cams for precise switching points
• Durable construction with a die-cast aluminum lower housing and impact-proof plastic cover
• NEMA 4 rated enclosure suitable for various mounting orientations without additional weather shields
• Equipped with a terminal connection kit for line voltage operation

Specifications

• Model: SQM40.165R11SC
• Operating Voltage: 110V AC (50/60 Hz)
• Torque: 45 in-lb (5 Nm)
• Running Time: 12.5 seconds for 90 degrees at 60 Hz (15 seconds at 50 Hz)
• Control Type: 3-position (Line 3P-Step)
• Auxiliary Switches: 6 internal adjustable switches
• Drive Shaft: 10mm D-Shaft
• Approvals: UL and CSA certified
• Protection Rating: IP66 / NEMA 4
• Operating Temperature: -5 F to 140 F (-20 C to 60 C)

Applications

• Load-dependent control of gas, oil, and combustion air in industrial burners
• Driving butterfly valves and dampers in thermal process plants
• Used in conjunction with 3-position or modulating controllers and burner control systems
• Suitable for medium to high-capacity oil and gas burner configurations
• Ideal for HVAC applications requiring precise rotary motion and safety shut-off functions