1.JJR2 Series low voltage soft start 2.apply to AC 50HZ,380V,660V, ... of load of the squirrel-cage motor. JJR2 Series low voltage soft start apply to AC 50HZ,380V,660V,11~500KW ... motor,motor rated power should match with the soft starter.3) Starting frequency : Does not require, the specific number of ... operation current online8) LCD displayWiring Diagram Dimension : JJR2 Series low voltage soft start