The breaker carries a full thermal derating curve: it holds 250 A up to 50 °C ambient, then steps down to 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. That means a panel running at 55 °C loses 12 A of headroom — plan the load schedule accordingly. The basic switch variant is 3VA2225-6JQ32-0AA0.
Interrupting Capacity by Voltage — SCCR Planning
The 3VA2225-6JQ32-0DC0 delivers 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V. For 480 V panels the 121 kA figure covers most utility transformer sizes.