MotorsModels 160-2000:Class B, with ball bearings and safety thermal overload protection. IP44.Direct 2 or 3 speed connection and also suitable for voltage speed control.Electrical supply:Single phase 230V-50Hz. (models from 160 to 350)Single phase 230V-50/60Hz. (models from 500 to 2000)Models 4000 and 6000:Class F, with ball bearings and safety thermal overload protection. IP54.Suitable for voltage speed control.Electrical supply:Single phase 230V-50/60Hz.Three phase 400V-50/60Hz (model 4000) or 400V-50Hz (model 6000)Additional informationThree phase models adjustable by inverter control.TD-MIXVENT-T modelsTD-MIXVENT versions fitted with a run-on-timer adjustable within 1 and 30 minutes and 1 or 3 speed motor (depending on the model) not suitable for speed control.