The Siemens 3VA2463-6JQ32-0BL0 is a SENTRON molded case circuit breaker rated for continuous current Iu 630 A at 40 °C, with an ETU560 electronic trip unit providing line protection across a 3-pole configuration. Breaking capacity reaches 242 kA at 240 V and 187 kA at 415 V, so it handles high-fault-current industrial feeds without cascading upstream — the SCCR headroom is there for a main or large feeder breaker in a 480 V panel. Derating is published stepwise: 600 A at 45 °C, 570 A at 50 °C, down to 450 A at 70 °C — if the panel ambient runs above 40 °C, that derating curve is the real ampacity limit, not the 630 A nameplate.
Dimensions are 248 mm high by 138 mm wide by 110 mm deep — a standard 3-pole MCCB footprint for a 630 A frame. Communication function is built in, so it can report status to a higher-level control system without an external module. Maximum power loss is 164.5 W; factor that into enclosure ventilation if the breaker is in a sealed cabinet with other heat sources.