What this 630 A MCCB carries
The Siemens SENTRON 3VA2463-7HN32-0DC0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C, with a maximum breaking capacity of 330 kA at 240 V AC. That 330 kA figure drops to 242 kA at 415/440 V and 187 kA at 500 V, so the available fault current at the panel location determines which voltage column you use for coordination. Thermal derating is published across the range: 630 A at 40 °C, 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, 520 A at 70 °C.
The breaker measures 138 mm wide, 248 mm high, 110 mm deep. The undervoltage release and auxiliary switches are factory-installed — no field-add kit to track down.