This is the ABB 3AUD0000004275 — an HVAC packaged drive with an e-clipse bypass and a disconnect switch inside a NEMA Type 3R enclosure. The 3R rating means it's rainproof and sleet-resistant for outdoor mounting. Rated for 500... 600 V three-phase input, 50/60 Hz, it's sized for 40 Hp at 41 A under UL light-overload use.
The 40 Hp / 41 A UL light-overload rating matches a 40 Hp fan or pump motor on a 600 V service. Input voltage spans 500... 600 V, covering 600 V nominal systems with tolerance. The 50/60 Hz frequency rating works on either grid.
