The Siemens SENTRON 3VA2450-7MN32-0HC0 is a 3-pole molded case circuit breaker (MCCB) rated for 500 A continuous at 40 °C, with a maximum breaking capacity of 330 kA at 240 V AC — that figure drops to 242 kA at 415 V and 187 kA at 500 V, so selectivity studies need the actual fault level at the point of installation. Rated current holds flat at 500 A up to 50 °C ambient, then derates to 495 A at 55 °C and 480 A at 70 °C — useful if the breaker sits in a warm enclosure near other heat sources.
Maximum power loss is 99 W — relevant for enclosure thermal calculations and ventilation sizing. The short-time withstand rating is 6 kA limited to 1 second — coordination engineers need this for downstream selectivity with smaller breakers.