The Siemens 3VA2463-6HL32-0AA0 is a SENTRON molded case circuit breaker rated for 630 A continuous current at 40 °C, with a 3-pole configuration and an ETU320 electronic trip unit designed for line protection. The ETU320 provides adjustable long-time, short-time, and instantaneous protection, giving you selectivity headroom downstream without nuisance tripping on motor inrush. Short-circuit breaking capacity ranges from 242 kA at 240 VAC down to 9 kA at 690 VAC — the 242 kA figure at 240 V tells you this breaker handles high-fault utility feeds or transformer secondaries where available fault current is substantial. The thermal derating curve is published from 40 °C up to 70 °C: 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, and 520 A at 70 °C. If your panel ambient runs 50 °C, you lose about 6 % of the continuous rating — factor that into your load calc. Power loss is listed at 162 W maximum — relevant for enclosure thermal management when multiple breakers are ganged in a switchboard section.
The SENTRON 3VA series is Siemens' current-generation MCCB platform, so accessory compatibility is current-catalog.
Dimensions: 248 mm height, 138 mm width, 110 mm depth. If you need those options, look at the -6HL32-0AA0 suffix variants in the same frame. The storage maximum exceeds the operating max — that governs shipping and warehousing, not running conditions.