YWF4E-500 air cooler axial motor fan ,air cooler motor fan ,500 air cooler fan,500 cooler motor YWF4E-500 air cooler axial motor fan ,air cooler motor fan ,500 air cooler fan,500 ... bearings—Motor protection:Design with thermal overload protector—Cable exit: variable—Protection class:I3. performance parameters MODELVOLTAGE VFREQUENCY HzCURRENT AINPUT WSPEED ...