Main Unit : 1.5 Hp, 440 Volt, 3 Phase, 4 Wire System, 50 Hz Optional Accessories (2 Pumps - Pumping Station ) 1.5 Hp, 440 Volt, 3 Phase, 4 Wires System , 50 Hz (Electrical Loading Platform) 0.25 Hp, 440 Volt., 3 Phase, 4 Wire System, 50 Hz