Helios SKRW EC 315/50/25 A

Centrifugal EC duct fan, sound-insulated, for direct installation in rectangular duct systems. The fan unit can be swivelled out. The housing is made of galvanised sheet steel with standardised duct flange profiles on both sides, featuring a space-saving design and sound-absorbing inner lining backed with 50 mm thick mineral fibre panels. It is easy to service thanks to the swivelling motor-impeller unit. The high-performance radial impeller has backward-curved plastic blades, ensuring vibration-free operation due to dynamic balancing. The air intake is aerodynamically optimised via a nozzle. It is driven by an energy-saving, speed-controllable EC external rotor motor with an IP54 protection rating and maximum efficiency. The fan is maintenance-free and interference-free, with ball bearing mounting. It includes integrated electronic temperature monitoring for the EC motor and electronics. Speed control is infinitely variable with a potentiometer or through an EUR-EC universal control system. Connection is via a standard terminal box (IP54) on a cable.