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SIEMENS SQM40.025A21 electromotoric actuator for burner controls
SIEMENS SQM40.025A21 electromotoric actuator for burner controls

SIEMENS SQM40.025A21 electromotoric actuator for burner controls

  • Gas and oil burners
  • Thermal process systems
  • Air and gas dampers
  • Modulating control systems (e.g., 4–20 mA signals)
  • Direct connection with Siemens burner controls
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SIEMENS SQM40.025A21 is an electromotoric actuator for burner controls, designed for counterclockwise rotation. It is used to control the flow of gas, oil, and combustion air, typically in medium to high capacity burner systems.
  • Model: SQM40.025A21
  • Rotation Direction: Counterclockwise
  • Torque: 10–18 Nm (depending on variant)
  • Running Time: 5–65 seconds (depending on variant)
  • Control Type: Analog input (e.g., 4–20 mA) or 3-position control
  • Position Indication: Internal
  • Drive Shaft: Can be disengaged
  • Mounting: Suitable for OEM integration
  • Protection Class: IP54 / IP66 (depending on variant)
  • Weight: 1.15 kg [mall.indus...iemens.com], [www.manualslib.com], [scccombustion.com]
  • Country of Origin: Germany
  • RoHS Compliance: Yes (since 24.04.2015)
  • REACH Info: Contains lead (Pb) > 0.1% w/w