Breaking capacity and voltage rating
The 3VA2110-5MN32-0AF0: Rated insulation voltage Ui is 800 V. The interrupting ratings track the system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V. That 121 kA at 415 V is the figure most relevant for European 400 V three-phase motor circuits — it tells you this MCCB can clear a bolted fault at the motor starter bus without upstream coordination issues.
Temperature derating and panel fit
The 100 A rating holds from 40 °C through 50 °C ambient. Above that it steps down: 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C. If your panel internal ambient runs above 50 °C — common in a sealed enclosure near a motor — size the upstream conductor for the derated value, not the nameplate 100 A. Dimensions are 105 mm wide, 181 mm high, 86 mm deep. That 105 mm width is the standard three-pole MCCB footprint on a DIN rail or mounting plate; verify gland-plate clearance for the 86 mm depth if the breaker sits behind a door.