Helios-tuulettimet 05786

EC-centrifugal fan designed to be installed in-line in circular ducting. Casing made from galvanised sheet steel with spigots to fit standard duct sizes. Backward curved centrifugal impeller made from polymers. Directly fitted on motor and dynamically balanced as a unit providing low noise levels and high efficiency. Energy-saving, speed-controllable EC external rotor motor in protection class IP 44. Maintenance-free and radio interference-free as well as ball bearing mounted. Integrated electronic temperature monitoring for EC motor and electronics . Standard with internal potentiometer for setting any fan speed between min. and max. speed. Stepless speed control with external potentiometer or stepless speed control with universal control system. Connection via standard terminal box (IP54) on the outside of the casing. Show more