It also has phase failure detection built in, which keeps a motor from single-phasing and burning out — a common failure mode in small shops where a fuse blows on one leg and nobody notices until the motor smells hot.
The 45 mm width means it takes up one standard 45 mm module slot — no surprises in a crowded panel. Height is 90 mm and depth is 81 mm, with 0 mm clearance needed at the back or sides. That zero-clearance spec means you can butt it against other devices on the rail without worrying about heat buildup or arc flash gaps. Wiring is all spring-loaded terminals — both the main circuit and the auxiliary/control circuit. Solid conductors from 0.25 to 2.5 mm² or finely stranded with ferrule from 0.25 to 1.5 mm². AWG equivalents are 24 to 14 for the main contacts. The front is IP20 finger-safe and touch protection is rated finger-safe, so it's safe to work around live in a locked panel.