Drive package for irrigation duty
The ABB 3AUD0000003518 is an ACQ580 irrigation drive package built for 3-phase 440-480 V input. UL listing gives it two duty curves: 100 Hp / 124 A for heavy-duty (constant-torque) loads, and 125 Hp / 156 A for light-overload (variable-torque) applications like centrifugal pumps. Frame size R7, NEMA Type 1 enclosure with IP21 protection — suitable for indoor pump houses or sheltered outdoor installs where drips and dust are present but washdown isn't required.
The heavy-duty 124 A rating governs continuous motor current for screw pumps, positive-displacement pumps, or conveyors where torque demand stays high across the speed range. The light-overload 156 A rating applies to centrifugal pumps and fans where torque drops with speed — the drive can deliver 125 Hp for 60 seconds during start-up or surge events without tripping. If your pump curve calls for 150 A continuous at 460 V, the light-overload figure confirms the drive can carry it; if the load is constant-torque, stay under 124 A.