It carries a 50 kA interrupting rating at 230 VAC, giving substantial fault-current headroom for branch-circuit protection in industrial control panels. The 63 A ampacity suits it for feeding a subpanel or a group of motor starters where the upstream protective device coordinates at this level.
The 1-pole form factor occupies one 18 mm DIN module, so it fits standard panel layouts without crowding.
DIN-rail integration
The 1-pole width (18 mm) leaves room for adjacent breakers, contactors, or terminal blocks in the same rail run. Rated operational voltage covers 400/690 VAC and 125 VDC, so it can serve DC control circuits as well as AC branch protection — useful in mixed-voltage panels.