APPLICATIONS
- Supply and exhaust ventilation systems for various premises with a limited mounting space.

DESIGN
- Fan casing is made of galvanized steel.

MOTOR
- Impellers with backward-curved impeller blades made of galvanized steel are powered by means of the 2- or 4-pole asynchronous motors with external rotor.
- Motors are supplied with incorporated overheating protection with automatic restart or the thermal protection terminals leaded outside for connection to the external protection devices depending on the model, see the wiring diagram motor is equipped with ball bearings for long service life.
- For precise features, safe operation and low noise, each impeller is dynamically balanced while assembly.
- Motor protection rating IP 44.

SPEED CONTROL
- Both smooth or step speed control is performed with the thyristor or autotransformer controller.
- Several fans can be connected to one controller in case the total power and operating current do not exceed the controller rated values.