It protects a single-phase 230 V AC circuit, switching both phase and neutral, with the neutral pole switching but not providing overcurrent protection. Rated breaking capacity is 4.5 kA per EN 60898 and 5 kA per IEC 60947-2. That 4.5 kA figure governs residential and commercial distribution board applications; the 5 kA IEC rating gives a bit more headroom if the part is specified into an industrial sub-distribution panel where the prospective fault current is known to be higher.
Mounting position is unrestricted — horizontal, vertical, or flat — which simplifies layout in crowded enclosures. The breaker is sealable (padlockable toggle) for lockout/tagout procedures. Supplementary devices like shunt trips or auxiliary contacts can be added on the right side via the product extension feature.