It carries a 330 kA breaking capacity at 240 V AC, dropping to 242 kA at 415 V and 440 V, then to 187 kA at 500 V, and 4.5 kA at 690 V — so the interrupting rating is voltage-dependent and the part is sized for high-fault-capacity main or feeder circuits up to 690 V. The 250 A rating holds from 40 °C up to 50 °C without derating; above that it steps down to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C, which matters for tightly packed enclosures or high-ambient machine bays.
Maximum power loss is 48 W, so thermal planning inside the cabinet should account for that dissipation at full load.
Auxiliary switching and releases
The basic switch core is order code 3VA2225-7HN32-0AA0. A voltage trigger and trip indicator are present on the front face for local fault indication.