The ABB 3ABD00048311-D is a general-purpose wall-mounted drive rated for 18.5 kW normal use at 38 A, with a heavy-duty rating of 15 kW at 31.6 A and a light-overload rating of 36.1 A at 18.5 kW. It accepts 380–500 V three-phase input across 47.5–63 Hz and carries an IP21 enclosure with NEMA Type 1 protection.
The normal-use rating of 38 A at 18.5 kW is the continuous current the drive delivers for typical variable-torque loads like pumps and fans. The heavy-duty rating of 31.6 A at 15 kW applies when you need constant-torque output for conveyors or extruders, where the drive must hold torque across the speed range. Light-overload at 36.1 A gives you headroom for short-duration overloads above the normal curve.
Frame size R3 means this drive fits a specific bolt pattern and duct clearance — check the mounting template against your panel backplate. Wall-mounted with IP21, so it handles indoor dust and dripping water but not washdown.