1.Control pump to drain water automatically in mining area. 2.Start work when there is water and stop work without water rated current: 60/60Arated voltage:380/660Vcontrol electromotor pmaximum power: 22/38KWshape dimension:530X350X585/ 530X350X585 cmThe switch has functions below, 1. Phase failue, over loading, locked-rotor, temperature protection, pump prevention of water damage, overvoltage, ...