Its breaking capacity hits 121 kA at 240 VAC and 75.6 kA at 415 VAC — numbers that tell you it handles high-fault scenarios without cascading upstream.
The 63 A rating holds flat from 40 °C to 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 (–). Breaking capacity drops with voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V (–).
That means you get remote status indication and undervoltage protection without adding separate accessory modules — saves DIN rail space and wiring time. The trip indicator gives local visual confirmation of a fault trip.
Power loss is 19.8 W maximum, so account for that heat in your enclosure sizing.