Helios RDD EC 500 B

Horizontal discharge EC roof fan with efficiency-optimized aluminum housing and newly developed high-performance centrifugal impeller. Housing made of seawater-resistant aluminum with integrated intrusion protection. Motor support plate and base plate with inlet nozzle made of galvanized steel. Base plate with threaded screws for attaching suction-side accessories. Protective grille as standard on the outlet side in accordance with safety standards. High-performance centrifugal impeller with backward curved blades made of plastic. Dynamically balanced in accordance with industry standards. Energy-saving, speed-controllable EC external rotor motor in enclosed design with maximum efficiency. Ball bearing mounted with moisture protection insulation. Maintenance-free and interference-free. Integrated electronic temperature monitoring for EC motor and electronics. With external terminal box as standard, an external inspection switch with protection and an internal potentiometer for setting the control voltage and thus any fan speed between minimum and maximum speed. Stepless speed control with external potentiometer or universal control system.