... ,MX341, R448,R449,R230,YH-8A,YH-12A,etc. Voltage Stabilizer SX440 is a half-wave phase-controlled thyristor type Automatic ... -264V acfrequency50-60 Hz nominalphase1wire2outputvoltageMax 90V dc at 207V ac inputCurrentContinuous 4 A dcIntermittent 6A for 10 secsresistance15 ohms ... msFiled current to 90%80 msMachine volts to 97%300msExternal voltage adjustment+/- 10% with 1 k ohm 1 watt trimmer ...