The ACS580-01-12A6-4: On the listed card it carries a part weight of 2.07 kgs, which puts it on the small-frame end of the ACS580-01 line — a one-person lift onto a panel backplate rather than a hoist job.
Cross-shop note vs the 031A-2
Within the same family the listed mechanical footprint widens sharply with current: the 031A-2 sits at 2.99 kgs while the 065A-4 lands at 19.05 kgs and the 180A-4 at 54.43 kgs, which means anyone chasing a second source should stay on the same current rating and voltage class, not just the same family prefix.