It breaks 6 kA per EN 60898 and IEC 60947-2 at 400 V AC, 50 Hz — that's the fault-clearing capacity for a standard commercial or light industrial distribution board. Thermal derating is documented across the full operating range: 30.8 A at 40 °C, 30.2 A at 45 °C, 29.5 A at 50 °C, 29.2 A at 55 °C, 28.2 A at 60 °C, and 26.9 A at 70 °C. If the panel ambient runs warm, that's the actual continuous current the device can carry without nuisance tripping — size your load accordingly.
Snap-on DIN rail mount, any position. The 4 MW width (72 mm) is standard for a 4-pole RCBO — it fills four slots in a distribution board. IP20 applies once the board is installed with conductors connected; the front face is touch-safe when the cover is on. Accepts supply from either top or bottom, which simplifies busbar routing. Test button requires a minimum of 195 V to operate the test circuit. That's worth knowing if you're commissioning on a reduced-voltage supply — the test won't function below that threshold.