The interrupting capacity is 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 7.5 kA at 500 V and 690 V — so it handles high fault currents on the low-voltage side of a transformer, but derates significantly above 500 V.
The continuous current rating is 125 A from 40 °C up to 50 °C, then it derates: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. Power loss at rated load is 30.6 W — factor that into your enclosure thermal budget, especially in a sealed panel.
This MCCB comes with an undervoltage release (UVR) already fitted — part of the base design. It also includes two auxiliary switches (HQ type) for remote status indication. The internal basic switch is a 3VA11125MH360AA0.