The 3AXD50000271177 is an ABB ACS580-01-099A-6 general purpose wall-mounted drive, sized for 525 to 600 V three-phase input. It carries a UL light-overload rating of 100 Hp at 99 A and a heavy-duty rating of 75 Hp at 77 A, so the same frame covers both constant-torque and variable-torque loads depending on the duty cycle. Frame size R7, IP21 enclosure, NEMA Type 1.
Light-overload at 99 A covers variable-torque loads such as centrifugal fans and pumps, where the drive can deliver the higher current for the lower duty cycle. Both ratings are UL-listed, so the drive lands in a UL 508A panel without derating gymnastics.
