At 415 V it's still 121 kA, at 440 V it's 75.6 kA, and at 690 V it drops to 17 kA. What that tells you: on a 240 V or 415 V distribution board with high available fault current (say, close to a large transformer), this MCCB gives you the headroom to avoid cascading failures upstream.
Thermal derating — the real-world current you can expect
At 55 °C it drops to 24 A, at 60 °C to 23.5 A, at 65 °C to 23 A, and at 70 °C to 22.5 A.
Auxiliary contacts and mounting
This version comes with 2 auxiliary switches HP (high-performance) pre-fitted — they signal the breaker's open/closed and tripped status back to a PLC or indicator lamp without needing a separate aux block. The front face is IP40, so it's splash-protected from the front but not sealed against hose-down. Depth is 70 mm, width 76.2 mm, height 130 mm — it fits the standard SENTRON 3VA panel footprint, so it swaps into an existing 3VA cutout without re-drilling the mounting plate.