... EMf Suppression 5.Built-in Hihg Capacity 12 Amp Fuse Automatic Voltage Regulator GAVR 12A *SensingInput Voltage 220/400VAC,1phase ... AVR ,SE350,R230,R438,R448,R449Voltage regulator SX440,SX460voltage stabilizer GAVR-8A,GAVR-10,GAVR-15A,GAVR-20AUnit Power ... *(Factory Settings) 50Hz system presets knee point at 47Hz MARATHON AVR ,SE350,R230,R438,R448,R449Voltage regulator SX440,SX460voltage stabilizer ...