The ABB 3AUD0000003506 is an ACQ580 irrigation drive package in frame size R4, built for 3-phase 208-240 V input at 50/60 Hz. Its UL-listed output ratings define the load it handles: 25 Hp and 74.8 A for light-overload duty (typically pumps running below full load), or 20 Hp and 59.4 A for heavy-duty use (constant-torque loads like conveyors or positive-displacement pumps).
NEMA Type 1 enclosure with IP21 protection — indoor use, drip-proof, no washdown rating. The irrigation package label (C192+F289 options) suggests it ships with conformal coating or additional board protection for the humidity and condensation common in pump houses and irrigation skids. Mount it in a clean, ventilated panel away from direct hose spray.
Listed as Active in production. This is a current-catalog ABB drive, not a phase-out or NRND line. No official successor exists because none is needed — the ACQ580 series is the active irrigation-drive platform.