The Siemens 3VA2463-5JQ32-0DL0 is a 3-pole SENTRON molded case circuit breaker rated for a continuous current of 630 A at 40 °C, with a maximum breaking capacity of 187 kA at 240 V AC.
Sizing and thermal derating — the real-world numbers
If your panel runs hotter — and most enclosed switchgear does — you need to derate: 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. Power loss at full rated current is 164.5 W maximum. The 138 mm width across three poles is standard for this frame size, but verify your busbar spacing and mounting footprint before cutting gland plates.
This breaker's interrupting capacity varies significantly with system voltage: 187 kA at 240 V, 121 kA at both 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V.
The base switch (the core mechanism without accessories) is order code 3VA2463-5JQ32-0AA0, and the integrated auxiliary trip module is 3VA9608-0BB25 — useful to know if you're stocking spares or need to replace just the trip unit without swapping the entire breaker.