The Siemens SENTRON 3VA2225-4HL32-0AA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with an ETU320 electronic trip unit. The 250 A frame carries the full load without derating up to 50 °C; above that, the thermal curve drops to 241 A at 55 °C and 213 A at 70 °C, so panel ambient matters if you're pushing the rating. Breaking capacity is 121 kA at 240 V, 75.6 kA at 415/440 V, 52.5 kA at 500 V, and 4.5 kA at 690 V.
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint for a 250 A frame.
Maximum power loss is 48 W at rated current. That's moderate for a 250 A MCCB — enough to consider spacing in a dense panel but not a showstopper. The 48 W figure is the worst-case heat dissipation the breaker sheds into the enclosure, so factor it into your panel thermal calculation if you're stacking multiple breakers.