SQM41.244R11 Siemens Actuator

Overview

The Siemens SQM41.244R11 is a high-precision electromotoric actuator designed for the accurate positioning of air and gas dampers, butterfly valves, and oil pressure controllers. Engineered for medium to large-capacity oil and gas burners, this electronic version provides reliable, load-dependent control in thermal process plants. It features a robust industrial gear train and a NEMA 4 rated enclosure, ensuring durable performance in demanding HVAC and combustion environments.

Features

• Clockwise (CW) rotation version specifically designed for standard burner linkages
• Multi-signal electronic board compatible with 4-20 mA, 0-135 Ohm, and 2-10 VDC control inputs
• Integrated drive shaft disengagement clutch for manual adjustments
• Internal position indication with adjustable limit and auxiliary switches
• High-resolution positioning with zero and span adjustment for precise air-fuel ratio control
• Durable construction featuring a die-cast aluminum lower housing and impact-resistant plastic cover
• UL and CSA approved for use in North American industrial applications

Specifications

• Model: SQM41.244R11
• Operating Voltage: AC 110 V (50/60 Hz)
• Rated Torque: 90 in-lb (10 Nm)
• Running Time: 25 seconds for 90 degrees (at 60 Hz)
• Rotation Direction: Clockwise (CW)
• Shaft Type: 3/8 inch Square (9.5 mm)
• Enclosure Rating: NEMA 4 / IP66
• Power Consumption: Approximately 20 VA
• Operating Temperature: -20 C to +60 C

Applications

• Load-dependent control of gas, oil, and combustion air flow in industrial burners
• Precise modulation of butterfly valves and air dampers in HVAC systems
• Integration with 3-position or modulating controllers (e.g., Siemens LME7 series)
• Ideal for boiler/burner combustion systems and thermal process plants requiring high-torque rotary motion