IP55 Enclosed drives for simple machines 0.18 to 15 kW (0.25 to 20 Hp). This range allows full customization of the human-machine interface part of the enclosure. The ATV31C has removable blanking plates where either a Vario switch disconnect or GV2 circuit breaker can be added as well as up to four 22mm operators (pushbuttons, LEDs, potentiometer,etc).