The Siemens SENTRON 3VA2225-6JP32-0KA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current at 40 °C, designed for line protection in distribution panels. Its breaking capacity hits 242 kA at 240 VAC, dropping to 187 kA at 415 VAC and 121 kA at 500 VAC — numbers that tell you it handles high-fault utility feeds or transformer secondaries without cascading upstream. The frame carries a shunt trip (STL) and a communication function, so it can be integrated into a monitored distribution scheme.
Derating and mounting
At 55 °C the continuous rating drops to 238 A, at 60 °C to 225 A, and at 70 °C to 200 A — the full thermal curve is on record, so no guesswork for a hot panel. Dimensions are 105 mm wide, 181 mm tall, 86 mm deep; it bolts into a standard MCCB footprint on a DIN rail or panel-mount baseplate. Power loss at full load is 48 W, which matters for enclosure heat budgeting.