630 A MCCB with 242 kA interrupting capacity
The Siemens 3VA2463-6HN32-0JL0 is a SENTRON molded case circuit breaker rated for 630 A continuous current at 40 °C, with a 242 kA interrupting capacity at 240 V AC. That's enough headroom to clear a bolted fault on a large distribution transformer without the breaker itself failing — critical for selectivity in a multi-level panel. The interrupting rating drops to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V, so verify the available fault current at your system voltage before specifying.
The breaker carries the usual Siemens compliance documentation — RoHS, REACH, and IEC/UL certifications for the 3VA series are available on request.