Industrial plug is simply a plug also called connector, industrial plug power supply is 16 Ann, 32 Ann, 63 Ann, 125 Ann these 4, Voltage is divided into 40 volts -45 volts, the color of its industrial plug is purple, 110 volts -130 volts is yellow, 200 volts -250 volts is blue, 240 volts -415 volts is red, and the last one is black, its voltage is 500 volts.