SQM41.165R11SC Siemens Actuator

Overview

The Siemens SQM41.165R11SC is a high-precision, electromotoric actuator designed for the accurate positioning of air dampers and gas or oil flow control valves in burner applications. Part of the SQM4 series, this model is engineered for clockwise rotation and provides reliable, load-dependent control of combustion air and fuel. It is specifically built for industrial and commercial environments, offering a robust solution for medium to high-capacity burners and thermal process plants where safety and efficiency are paramount.

Features

• High-resolution electronic control for precise modulation of dampers and valves
• Synchronous motor ensures consistent and repeatable positioning
• Manual shaft disengagement via a coupling pin for easy alignment during installation
• Durable construction with a die-cast aluminum lower housing and impact-resistant plastic cover
• Internal position indicator for at-a-glance monitoring of the actuator status
• Adjustable limit and auxiliary switches for customized control sequences
• NEMA 4 rated enclosure provides protection against harsh environmental conditions
• UL and CSA approved for compliance with North American safety standards

Specifications

• Model: SQM41.165R11SC
• Operating Voltage: 110V AC (50/60 Hz)
• Torque: 45 in-lb (5 Nm)
• Running Time: 15 seconds for 90 degrees
• Direction of Rotation: Clockwise (facing the drive shaft)
• Drive Shaft: 10mm D-shaft
• Control Type: Line 3-position (3P-Step)
• Protection Rating: NEMA 4 / IP66
• Agency Approvals: UL and CSA

Applications

• Load-dependent control of gas, oil, and combustion air in industrial burners
• Positioning of butterfly valves and flow control valves in HVAC systems
• Automation of air dampers in thermal process plants and boiler systems
• Integration with burner controls and modulating controllers for high-turndown applications
• Emergency shutdown systems requiring reliable rotary motion and position feedback