AVR(Automatic Voltage Regulator) for Siemens generators (1FC4, 1FC5 series & 1FC6 series that made by Siemens, WEMP, FXEM China or HYUNDAI Korea).
Type 6GA2 490-0A( For 1FC4, 1FC5 series).
Type 6GA2 491-1A( For 1FC6 series).
Type 6GA2 492-1A( For 1FC6 series more than 200KW ).