Helios Radial Duct Fan, 1-PH RR 200 A

Radial in-line duct fan with 2 speed settings for direct mounting in the duct system. For conveying medium and small air volumes against high resistances. Housing made of galvanized steel sheet with round connection spigots designed for standard ducts. Radial impeller with backward-curved blades made of plastic. Pressed directly onto the motor and dynamically balanced as a unit. Low noise, high efficiency. Single-phase AC external rotor motor, enclosed design, maintenance-free, built-in thermal contacts, sealed, low-noise ball bearings with long-term lubrication. Speed control: via electronic controller or stepped transformer or two-stage operation with type DS 2/2 (accessory, item no.: 1267).