... three phase power saver ,save up 30% Switch : with swith to control "Auto" , "Off" ,"Manual"or small .auto control: use RTOS embedded Microchip to ... auto control when the loading big LED display and firmware control, 3 phase energy saver three phase power saver with ... :Shop, House, Restaurant,Office ,Factory,Cyber-cafe,etc.. 400AMP Three phase power saver,LED,LCD display