SQM41.274R10SC Siemens Actuator

Overview

The Siemens SQM41.274R10SC is a high-precision electromotoric actuator designed for the accurate positioning of air dampers, oil pressure controllers, butterfly valves, and other components requiring rotary motion. This specific model is a clockwise-rotating, high-torque unit engineered for industrial and commercial burner applications. It provides a reliable solution for load-dependent control of gas, oil, and combustion air, ensuring optimal burner performance and efficiency.

Features

• High-torque performance of 90 in-lb for demanding rotary applications
• Clockwise rotation (CW) specifically designed for right-hand operation
• Integrated synchronous motor for consistent and precise timing
• Robust NEMA 4 weatherproof enclosure for durability in harsh environments
• Internal position indication for easy monitoring of the drive shaft angle
• Shaft disengagement clutch allows for manual alignment with valves or linkages
• UL and CSA approvals ensuring compliance with North American safety standards
• Adjustable limit and auxiliary switches for flexible control configurations

Specifications

• Model: SQM41.274R10SC
• Operating Voltage: 110V AC (50/60 Hz)
• Torque: 90 in-lb (10 Nm)
• Running Time: 25 seconds for 90 degrees (at 60 Hz) / 30 seconds (at 50 Hz)
• Rotation Direction: Clockwise (CW)
• Shaft Type: 3/8 inch Square Shaft
• Control Type: 2-position (High/Low) control
• Auxiliary Switches: Includes internal switches for position signaling
• Enclosure Rating: NEMA 4 (IP66 equivalent)
• Operating Temperature: -5 F to +140 F (-20 C to +60 C)

Applications

• Load-dependent control of combustion air, gas, and oil flow in industrial burners
• Positioning of butterfly valves and dampers in thermal process plants
• High-demand HVAC systems requiring precise modulating or high/low control
• Use with Siemens burner controls such as the LMV5 or LME series
• Suitable for both new installations and as a replacement for competitive actuators in burner assemblies