The Siemens 3VA2450-7JQ32-0AA0 is a 3-pole SENTRON molded case circuit breaker rated for 500 A continuous current across a 40 °C to 50 °C ambient band — it holds full rating up to 50 °C before the thermal derate curve kicks in, which matters if your panel sits near process heat or a sunny wall. At 55 °C it still carries 477 A; at 70 °C it's 410 A. That ground-fault function is built in, not a bolt-on accessory. Interrupting capacity is 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V. The 6 kA limited-to-1-second rating confirms it can hold in on a downstream bolted fault long enough for the branch breaker to clear. Communication function is onboard for monitoring network integration.
IP40 front protection suits closed-panel use. Latching endurance is 15,000 operations.