At 415 V the rating drops to 121 kA, still enough for most secondary distribution; at 690 V it's 4.5 kA, which limits its use on 690 V systems to low-fault-capacity points.
Thermal derating — the real-world current you can pull
Above that it derates: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C.
Switching and protection features
The breaker ships with a built-in undervoltage release (UVR) — that's the '0CL0' suffix indicator. The trip indicator is mechanical, so you can see a trip event even with the panel door closed.
Panel fit — dimensions and mounting
The 140 mm width is the 4-pole footprint; a 3-pole version would be narrower, so if you're swapping into a panel cut out for a 3-pole MCCB, you'll need to verify the mounting plate accommodates the extra width.