Schneider Electric ATV21HU15N4 Variable Frequency Drive

The Telemecanique ATV21HU15N4 Variable Frequency Drive is a 1.5 kW (2 HP) three-phase VFD designed to regulate speed and torque of 3-phase asynchronous motors in HVAC systems. It accepts 380–480 V AC input, provides the same range on the output, delivers up to 3.2 A at 380 V (2.5 A at 480 V), and offers a wide adjustable output frequency from 0.5 to 200 Hz, with Modbus communication, an integrated Class A EMC filter, IP20 protection, and panel-mount with a heat sink. This drive targets HVAC and industrial motor control, enabling precise speed control of pumps and fans to reduce energy use and mechanical wear, with common applications in pumps, fans, air handling units, ventilation systems, cooling towers, and commercial building automation; common replacements include the ATV320U15N4C.