Breaking capacity drops as voltage climbs: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V.
Current rating holds at 63 A from 40 °C through 50 °C, then derates to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. In a sealed, uncooled enclosure that hits 60 °C ambient, you lose 2 A — plan the load accordingly. The 70 mm depth, 101.6 mm width, and 130 mm height fit standard SENTRON panel footprints; the 19.8 W maximum power loss needs ventilation if multiple breakers are ganged.