An angelic order of the second hierarchy, traditionally associated with maintaining divine order and restraining hostile spiritual powers.
Powers are the lowest order of the second hierarchy. Medieval theological explanations connect them with the ordering of divine ministries and with the restraint of hostile spiritual powers.
Etymology
From Latin potestates, “powers” or “authorities.”
Sculptor Notes
Later art may give Powers martial attributes, but such imagery overlaps easily with Michael and warrior angels. Context and inscription are therefore essential if the specific choir is meant to be identified.
References
https://www.newadvent.org/summa/1108.htm