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Smoke and heat exhaust fan SEF
SEFS – short (krótka obudowa)
SEFL – long (długa obudowa)

Smoke and heat exhaust fan SEF

Smoke and heat exhaust fans with an axial rotor are designed for removing smoke, fumes and heat outside the building during a fire. The devices facilitate rescue and fire fighting actions and improve the safety of people and property in all kinds of facilities. They also prevent the spread of smoke and fire into fire-free zones. SEF fans can be also used as air extraction and air supply fans in normal ventilation systems. The devices are also suitable for smoke ventilation in explosive atmosphere areas. All fans are adapted for working with an inverter.

  • Modular motor-rotor unit
  • Rotor made of aluminium, with variable pitch
  • Standard asynchronous cage motor
  • Ingress Protection Rating of the housing: IP55
  • Insulation class: H
  • Standard supply voltage: 230/400 V, 50 Hz (for three-phase motors up to 5.5 hp and 400/690 V, 50 Hz for more powerful motors)
  • Rated power: 0.75 – 45 kW
  • Rotational speed: 923 – 2945 revolutions per minute
Rotor types
  • One direction rotor (airflow from the rotor to the engine)
  • Reversible rotor
  • Diameters range: DNØ 450 – 1250 mm
  • Fan housing with inspection opening for the motor
  • Epoxy powder coating
Two fan types
  • with a single-speed motor
  • with a two-speed motor
Two fire protection classes
  • F400 (400oC/2h)
  • F300 (300oC/1h)
Two housing lengths
  • SEFL – long
  • SEFS – short


Image File info Date Open Download
Smoke exhaus fan SEF - Information brochure 1.2 MB 05.06.2017 Open Download
Sokół - Operation and Maintenance Manual 1 MB 03.07.2018 Open Download

See also

Product from category: Fans