SQM33.410A9 Siemens Actuator

Overview

The Siemens SQM33.410A9 is a high-precision electromotoric actuator designed to drive and position gas dampers, air dampers, oil control valves, and other ancillary equipment in burner systems. This compact servo motor is specifically engineered for use with Siemens burner controls, such as the LMV3 series, providing load-dependent control of fuel and combustion air volumes. Its robust design features a die-cast aluminum housing and an optical feedback system, ensuring reliable and accurate performance in demanding industrial heating and furnace applications.

Features

• High-precision stepper motor for accurate positioning of control elements
• Integrated optical feedback system for precise signal monitoring
• Robust construction with die-cast aluminum housing and impact-proof plastic cover
• Self-holding torque provides stability when power is applied or interrupted
• Pre-installed 1.5-meter connection cable with RAST2.5 plug for easy integration
• Gear train with permanent lubrication and minimal backlash for long service life
• Versatile mounting options with multiple fixing holes and a positioning pin

Specifications

• Model: SQM33.410A9
• Operating Voltage: AC/DC 24V (+/- 20%)
• Rated Output Torque: 1.2 Nm
• Max Holding Torque (Live): 1.2 Nm
• Max Holding Torque (Dead): 0.8 Nm
• Running Time (90 degrees): 5 to 120 seconds (depending on burner control unit)
• Angular Adjustment: Maximum 90 degrees
• Cable Length: 1.5 meters
• Shaft Diameter: 10 mm
• Protection Rating: IP54 (when properly installed)
• Weight: Approximately 1.56 kg

Applications

• Supervision and control of air dampers and gas valves in oil and gas burners
• Used in conjunction with Siemens LMV2 and LMV3 burner control systems
• Ideal for medium to large capacity industrial heating systems and furnaces
• Precise modulation of fuel-to-air ratios in combustion processes
• General rotary motion applications requiring high torque and safety certifications