What this MCCB carries and where it fits
The Siemens SENTRON 3VA2463-7HN32-0AA0 is a 3-pole molded case circuit breaker rated for 630 A continuous at 40 °C, with an ETU350 electronic trip unit. That continuous-current rating means it can carry a full 630 A load on a 40 °C panel without derating — bump the ambient to 50 °C and it still holds 593 A, so you don't lose headroom in a warm enclosure. The 330 kA breaking capacity at 240 V tells you this breaker can interrupt a massive fault without venting or cascading upstream — sized for high-fault service-entrance or feeder duty where the available short-circuit current is serious.
Panel fit and footprint
The breaker measures 138 mm wide, 248 mm tall, and 110 mm deep. That depth is the overall body — no extra projection for the rotary handle. Three-pole footprint matches standard SENTRON 3VA mounting patterns; if you're swapping in a panel built for a 5SQ2370-2YA05, check the bus-bar spacing and lug centers, because the 3VA series uses a different terminal layout than the older 5SQ line.
Breaking capacity across voltages
Breaking capacity drops as line voltage rises: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V. That 9 kA at 690 V is the weak point — if your system runs at 690 V with high fault current, this breaker isn't the right choice; step up to a higher-rated frame.