The Siemens 3VA2463-5HN32-0AC0 is a 3-pole SENTRON molded case circuit breaker rated for 630 A continuous current at 40 °C, with an ETU350 electronic trip unit handling line protection. At 415 V and 440 V it still holds 121 kA, and at 690 V it drops to 17 kA, so the voltage you're feeding matters for coordination studies. Thermal derating is built in: at 45 °C it carries 612 A, at 50 °C 593 A, stepping down to 520 A at 70 °C. If your enclosure runs hot, factor the curve — the 630 A nameplate is only valid at 40 °C ambient.
Integration and compliance notes
The 3VA2463-5HN32-0AC0 ships with 2 auxiliary switches (HQ type) pre-installed — no separate order for aux contacts on the first fit. The base switch supplied is 3VA2463-5HN32-0AA0, so the -0AC0 is the fully assembled catalog number with the aux contacts. Rated insulation voltage is 800 V, storage range -40 °C to 80 °C, operating range -25 °C to 70 °C.