... 2,High efficiency,miniaturization 3,Protect function:short circuit,over load,overvoltage protect Main specification:1,Output Voltage/current:50V/40A2 ... (no frost)11,Safey standard:EN60950,GB494312,Over load protect:105%~150%(rated load),self-restore13,Output adjust range:±10%(rated output ... % loaded with aging test,make the product have high reliability. LED display panel power supply