The IEC High Voltage Digital Power Supply (2x 6.3V.AC @ 4amps, 0-300V..AC / 0-500V.DC @50mA) is a general purpose power supply that can supply high voltage up to 50mA. The overload trip is electronic and is reset by turning off the high voltage output. The low voltage is provided as 2x 6.3V.AC. 4A outputs which are normally used for running heaters of electron tubes. see also LB2611-001 for 300V.DC. unit.