It's a DIN-rail mount, IP20 enclosed unit — standard for distribution boards and sub-panels.
Screw terminals, 1-pole. Occupies a single 17.5 mm module width on the DIN rail — 69 mm wide overall with the housing overhang. Depth of 94.5 mm means it clears most standard enclosure depths; check your gland-plate clearance if the panel is shallow. Height of 89 mm fits typical TP and N distribution boards.
