Rated breaking capacity hits 121 kA at 240 V, 75.6 kA at 415 V, and 52.5 kA at 440 V.
Current rating is flat 80 A from 40 °C through 50 °C, then derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. In a sealed, uncooled enclosure at 55 °C ambient, you lose 2 A — negligible for a feeder sized at 80 A. Frame dimensions are 130 mm high, 76.2 mm wide, and 70 mm deep, which fits the standard SENTRON 3VA mounting footprint for three-pole breakers on DIN rail or panel-mount.
