Schneider Electric ATV61HD55N4 Variable Frequency Drive

Schneider Electric's ATV61HD55N4 (Altivar 61) 55 kW variable frequency drive precisely regulates speed and torque of three-phase asynchronous motors. It is designed for industrial motor control in pumps, fans, HVAC systems, water treatment facilities, compressors, and other process automation applications, delivering smooth acceleration and energy-efficient operation. Key specs include 380–480 V AC three-phase input and output, 120 A at 380 V / 101 A at 480 V, 79 kVA apparent power, 50/60 Hz supply and 1–500 Hz output, sensorless flux vector control and V/F control, and a switching frequency of 1–16 kHz (12 kHz nominal). Communications support includes Modbus and CANopen, with a Level 3 integrated EMC filter, IP20 protection, and panel-mount with heat sink mounting. Common replacements include Schneider Electric ATV630D55N4, ATV930D55N4, and Siemens SINAMICS G120X 55 kW.