1.JJR2 Series low voltage soft start 2.apply to AC 50HZ,380V,660V, ... squirrel-cage motor. JJR2 Series low voltage soft start apply to AC 50HZ,380V,660V,11~500KW of ... .5G place2.Function and characteristic 1) Five kinds of start mode:- Ramp voltage starting : In general which use ... Heavy load and Strong shock starting: For difficult to start when heavy-load 2) Applicable motor : squirrel-cage type three ...