The 250 A rating holds flat through 50 °C (–), then derates to 223 A at 70 °C, so in a warm enclosure you still have headroom for a full 250 A feeder if ambient stays under 55 °C.
This MCCB delivers 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. For a 480 V panel (common in North America), the 25 kA at 440 V is the closest published figure; for a 400 V IEC installation, the 75.6 kA at 415 V gives substantial SCCR headroom for most industrial service entrances.
That shunt trip allows remote tripping from a PLC or emergency-stop circuit — useful for a curing-press line where you need to drop the feeder on a safety demand.