The ABB 3ABD00057957 is an ACS380-series low-voltage AC machinery drive module, Frame Size R4, rated for 18.5 kW normal-duty output at 38.0 A on a 3-phase 380-480 V supply, 47.5-63 Hz. It carries an IE2 efficiency level and IP20 protection in an Open Type enclosure — panel-mount only, no conduit seal needed for dry indoor cabinets.
Three overload curves are defined: normal-use (Pn 18.5 kW, In 38.0 A), light-overload (PlD 18.5 kW, IlD 36.0 A), and heavy-duty (PhD 15.0 kW, IhD 32.0 A). The normal and light-overload ratings land at the same power but differ in current — the light-overload curve likely applies a lower current limit for applications with a steady load profile, while the heavy-duty figure drops to 15 kW for constant-torque or high-starting-torque loads. If the motor plate calls for 32 A or less and the load profile is pump/fan, the normal-use line is the one to spec against.