... 3 times the motor rated current.2.No impact on smooth start to extend the life of mechanical equipment and electrical.3 ... reliable ; and installation and maintenance are convenient.II, Application:Applicable to three-phase AC 380V 660V, 3KV, 6KV,10KV drag fan ... rotor type asynchronous motor soft starter and control surging currentIII, How to order,1, Model of motors, rated power, stator voltage, ...