The Siemens 3VA2463-5HL32-0AD0 is a SENTRON molded case circuit breaker rated for 630 A continuous current at 40 °C, with a breaking capacity of 187 kA at 240 V — that's the short-circuit rating that decides whether it holds or blows apart on a bolted fault.
Thermal derating curve
At 70 °C it's down to 520 A. That matters when you're sizing for a crowded cabinet with other heat sources; the nameplate 630 A only holds if the air around it stays at 40 °C.
The 3VA2463-5HL32-0AD0 measures 248 mm tall, 138 mm wide, and 110 mm deep — a 3-pole frame that fits standard MCCB panel mounting. Depth of 110 mm (4.33 in) means it clears most 200 mm deep enclosures without a sub-panel extension, but verify gland-plate clearance if the panel has a rear-mounted bus.