
Siemens SQM40.275A20 actuator
Powerful servo drive Siemens SQM40.275A20 for air dampers of industrial burners Reliable air supply control for medium and high power burners Siemens SQM40.275A20 is a professional electromechanical actuator (servomotor) for controlling air dampers in gas and oil burners of medium and high power. The model is specially designed for use in Siemens burner automation systems and provides precise air metering at all stages of burner operation: from pre-purge to operation at maximum power. If you need a reliable, durable and easy-to-configure device for your boiler room or industrial installation, SQM40.275A20 is the optimal choice. Key advantages High torque - nominal torque of 10 Nm ensures reliable movement of even heavy air dampers and large diameter valves. Optimal opening time - full 90° rotation is achieved in 30 seconds, guaranteeing smooth and precise air supply regulation without jerks or surges. Reliable protection against external influences - protection class IP54 (according to some data IP66) allows the actuator to be operated in dusty and humid boiler rooms. Motor protection against blocking - built-in protection prevents actuator failure when the damper mechanism jams. Convenient mechanical adjustment - cam switches are adjustable without special tools, the presence of a scale for displaying switching angles simplifies the adjustment process. Wide range of compatible controllers - the actuator is controlled by burner automation LAL, LOK, LFL, LGK, LME, LME7, LMO and others. Technical specifications Model: SQM40.275A20 Order number: 884.712.211 Supply voltage: AC 220-240 V (-15% / +10%), 50/60 Hz