MotorsAvailable, depending upon the model, with single or three phase motors in 2, 4 or 6 poles.All motors are speed controllable by autotransformer except 2 pole and /4-630, 710, T/800, T/900 and T/1000.Three phase models are speed controllable by inverter.Electrical supplies: Single phase 220-240V-50Hz. (Capacitor located inside the wiring terminal box). Three phase 220-240/380-415V-50Hz or 380-415V-50Hz. (See characteristic chart).Additional InformationStandard air direction: form (A) configuration.(Motor over Impeller).On requestInlet finger proof guard for models Ø 800 to 1000.