The Siemens SENTRON 3VA2225-7KP32-0AJ0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, holding that rating steady through 50 °C before derating to 238 A at 55 °C and 200 A at 70 °C. That thermal curve means the breaker can be installed in a warm enclosure without oversizing, as long as the ambient stays at or under 50 °C — above that, the load must be trimmed or the panel vented. The interrupting ratings climb to 330 kA at 240 V, 242 kA at 415 V and 440 V, and 187 kA at 500 V, dropping to 4.5 kA at 690 V. At 240 V the 330 kA figure covers virtually any utility fault level in North American distribution; at 415 V the 242 kA handles high-capacity industrial feeds.
The 3-pole block occupies a single 105 mm slot; the communication module adds no extra width. Maximum power loss is 48 W, so the thermal budget inside the enclosure should account for that dissipation when sizing ventilation or forced-air cooling.