Schneider Electric ATV71HD55N4 is a 55 kW (75 HP) Altivar 71 variable-frequency drive designed to control three-phase motors from a 200–480 V AC supply. It adjusts motor speed and torque by varying output frequency and voltage and includes an integrated EMC filter and a graphic operator terminal for on-site configuration and monitoring. As part of the Altivar 71 family, this model has been discontinued, reflecting its status as an older generation drive.
