The 3AXD50000465231 is an ABB ACQ580-PC-027A-4 LV AC packaged drive — a VFD, circuit breaker, and fuse in one Type 1 enclosure, rated for 20 Hp light-overload at 460 V UL (27 A output). Frame size R3, IP21 protection, 3-phase input 440...480 V, 50/60 Hz. This is the variant with the built-in disconnect and branch-circuit protection, so it lands as a single SKU on the panel BOM rather than a separate breaker-and-drive pair.
The 27 A light-overload rating (20 Hp at 460 V) is the continuous output current the drive can deliver for typical variable-torque loads — fans, pumps, compressors. That 27 A figure governs the motor nameplate match; if your motor FLA is 26 A, this drive has headroom. The 440...480 V input range covers 460 V nominal and 480 V grids without a transformer tap change. Frame R3 tells you the physical footprint and the gland-plate layout — it's the same mechanical envelope as other R3 ACQ580 variants, so panel cutouts and mounting holes are consistent across the series. IP21 and NEMA Type 1 mean the drive is drip-proof and finger-safe but not washdown-rated. It belongs in a clean indoor electrical room or a ventilated cabinet, not on a food-processing floor or outdoors. The built-in circuit breaker and fuse satisfy UL 508A branch-circuit protection requirements, so you can land this as a single line item on the UL panel label without a separate feeder breaker.