At 240 V it interrupts 187 kA; at 415 V and 440 V that drops to 121 kA, then 75.6 kA at 500 V, and 17 kA at 690 V — so the available fault current at your service voltage is the number that governs SCCR compliance, not the 240 V headline. The 138 mm width, 248 mm height, and 110 mm depth fit the standard SENTRON 3VA footprint, so a panel laid out for a 3VA frame accepts this unit without re-drilling the mounting plate.
Temperature derating — don't lose capacity at the bus
At 55 °C it derates to 384 A, at 60 °C to 376 A, at 65 °C to 368 A, and at 70 °C to 360 A.