At 415/440 V it still holds 121 kA, and at 690 V it drops to 3.4 kA, so the voltage class of your distribution determines the available fault current it can handle.
The breaker carries its full 100 A rating from 40 °C up to 50 °C, then derates to 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. The 105 mm width and 86 mm depth fit standard SENTRON panel footprints, and the front IP40 protection handles typical enclosure interior conditions.
