... product is mainly used in a circuit of AC 50Hz or 60Hz , rated working voltage up to ... be used for frequent start and control of an AC motor. Main Technical parameter Current class9A , 12A , ... 25A , 32A , 40A , 50A , 65A , 80A , 95A (AC-3,380V)Rated insulation voltageAC 660VRated working voltageAC380v,660V,50 ... 48V,110V,127V,220V,240V, 380V,415V,440v,480V,500V,600V,660VNumber of poles3P,4POperating ...