It delivers 75 Hp and 77 A under light-overload use per UL, on a 3-phase 525-600 V input. The enclosure carries IP55 and NEMA Type12 ratings, so it's sealed against dust and hose-down — fine for pump rooms or washdown zones without an extra cabinet.
The 77 A light-overload rating is the number that governs motor sizing on a 575 V system — that's the UL-listed current for continuous duty. Input voltage range of 525-600 V covers 480 V and 600 V classes, but the 525 V floor means it won't run on a 400 V line. Frequency is 50/60 Hz, so it handles both mains standards. The IP55 / NEMA Type12 enclosure is self-contained; no need for a separate wall-mount cabinet, but make sure the conduit entries seal properly to keep the rating.
Lifecycle status is active — this is a current-production part, not a phase-out or last-time-buy. No official successor or alternate MPN is listed, so this is the direct part for a BOM line calling out the ACQ580-PD-077A-6+B056 configuration.