The style of that stuff is _strange_! The screw terminals scream late 80s or early 90s, and the frame around the individual socket elements just looks weird (mostly because of the huge mounting screws, all modular systems I know (and that's a lot) had the frames just held in place by the receptacle/switch covers.)
The plug isn't that big, only slightly bigger than an NZ plug. Of course it's bigger than a NEMA plug.
