The ABB 3AUD0000004288 is a factory-assembled HVAC drive package — the ACH580 variable-speed drive married to a circuit breaker disconnect, all inside a NEMA Type3R enclosure. That Type3R rating means it's built for outdoor or unconditioned indoor installation: rain-tight, sleet-resistant, and suitable for wall-mount on a roof or mezzanine where a standard IP20 drive would need a separate weatherproof cabinet.
UL light-overload output is 150 Hp at 144 A. That's the fan and pump curve — continuous duty at nameplate, not a short-time overload. For a 3-phase 500-600 V supply, this unit drives a 150 Hp motor on a cooling tower fan, an air-handler, or a chiller pump without needing external overloads or a separate disconnect cabinet. The 50/60 Hz frequency rating means it's a single-frequency-class drive — no derating or reconfiguration needed for 50 Hz vs 60 Hz grids. It accepts either.
Production status is active. This is not a last-time-buy or NRND part — it's a current catalog item in ABB's ACH580 HVAC drive family. The integrated circuit-breaker disconnect (B058 option) simplifies panel layout and reduces wiring time on site. For BOM freeze or line-down replacement, confirm the specific 144 A frame and the B058 disconnect option match your existing installation.