60 Amp Continuous Rating, 100% Duty Cycle. Variable Voltage Control 1-15 VDC. Voltage Control Knob has center detent at 13.5 VDC. Overload & short-circuit protection with Current Foldback at approximately 62 Amp. Over Temperature Protection; variable speed fan automatically controlled for quiet operation. This supply will operate on 120 or 220 volt input, no modification required. If you require the 220 volt AC power cord, please order GZV6000-220 volt version.