Breaking capacity — what those kA numbers mean for your panel
This MCCB carries a breaking capacity of 440 kA at 240 V, 330 kA at 415 V, and 220 kA at 500 V. At 690 V it still clears 52.5 kA. The 240 V figure (440 kA) is the highest short-circuit current this breaker will ever see and still open; at 415 V you still get 330 kA, which covers most European industrial mains.
Above that it derates: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, 213 A at 70 °C. Plan your load so it doesn't exceed the derated number at your actual ambient; otherwise nuisance tripping or a melted lug is on you, not the breaker.
Physical fit — panel integration
The 3-pole footprint matches other SENTRON 3VA2 breakers in the same current range, so if you're swapping from a similar frame, the busbar and wire routing should line up without re-drilling. The shunt trip and auxiliary switches add depth behind the panel — account for the 86 mm plus wiring clearance when sizing the enclosure.