The Siemens SENTRON 3VA2225-5HL32-0AB0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, with no derating needed up to 50 °C — above that, it drops to 241 A at 55 °C and 213 A at 70 °C, so panel ambient temperature directly governs the usable ampacity. Interrupting capacity is 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V — these are the SCCR values that determine whether this breaker can clear a fault without upstream coordination failure.
Maximum power loss is 48 W, which contributes to the enclosure's thermal budget and must be factored into the panel cooling calculation.