Features

Rectangular-centrifugal fan with backward curved impeller for direct installation in rectangular duct system. Fan with swing out motor and impeller unit. Casing made from galvanised steel and flanged on both ends, compact design, service friendly (cleaning) through swing out motor and impeller unit. Starting from size 450 additional locking of swing out motor and impeller unit. Centrifugal, backward curved impeller made of polymer. Dynamically balanced to DIN ISO 1940 Pt.1 for low noise operation. Totally enclosed, 3-phase external rotor motor with thermal contacts wired to the terminal block. Speed control by use of a 5-step transformer controller or an electronic controller (stepless) as well as with a Helios frequency inverter and sinus filter on all poles Maintenance free, low-noise sealed for life ball bearings, tropical protection of windings. Mains supply via pre-assembled terminal box (IP 55).