It carries interrupting ratings of 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V — giving you headroom for high-fault-capacity distribution panels where selectivity with downstream breakers matters.
The 250 A rating holds flat from 40 °C through 50 °C, then derates to 240 A at 55 °C, 235 A at 60 °C, 230 A at 65 °C, and 225 A at 70 °C — so in a warm enclosure you lose roughly 10% of capacity by the top of the operating range. Maximum power loss is 40 W, which matters for panel thermal budgeting when grouping several breakers in a closed cabinet.