Siemens Servo Motor, SQN75.624.A21B

Use and features

The SQN7... actuators are designed for driving gas or air dampers of oil or gas burners of small to medium capacity, for load-dependent control of the fuel and combustion air volume:

• In connection with P-PI or PID controllers, such as the RWF40...
• Directly via the different types of burner controls, such as LFL..., LME..., LMG..., LMO..., LOA...
• In connection with 1- or 2-wire control or 3-position controllers

All types of actuators feature:

• Impact-proof and heat-resistant plastic housings
• Screw terminals for the electrical connections
• Maintenance-free gear train, which can be disengaged
• Internal position indication
• Easy-to-adjust end and auxiliary switches for adjusting the switching points
• Integrated electronic circuits

• Holding torque:
  • SQN70... / SQN71... / SQN75.. 0.7...1.3 Nm
  • SQN74... 0.7 Nm
• Running time:
  • SQN70... / SQN71... / SQN75... 4...30 s
  • SQN74... 4 s
• Direction of rotation:
  • SQN70... / SQN74... counterclockwise
  • SQN71... / SQN75... clockwise
• Equivalent to actuators of the same category made by Conectron and Berger