What this MCCB carries and what it means for your panel
The Siemens SENTRON 3VA2463-6JQ32-0CC0 is a 3-pole molded case circuit breaker rated for line protection, with a full-scale current of 630 A and an interrupting capacity of 242 kA at 240 V. That interrupting figure drops to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V — so the voltage class of your distribution determines the available fault current this breaker can safely clear. It carries a continuous current of 630 A at 40 °C, derated to 450 A at 70 °C; the thermal curve matters if your panel runs hot or you're pushing the bus near its limit. The breaker includes an undervoltage release and two HQ auxiliary switches, plus a communication function — so it can report status and trip events back to a PLC or BMS without a separate interface module. The basic switch variant is 3VA2463-6JQ32-0AA0; this order code adds the communication and auxiliary-switch package.
Mounting and integration
Dimensions are 138 mm wide, 248 mm high, 110 mm deep — a standard SENTRON 3VA frame size that drops into a DIN-rail or panel-mount base without re-drilling the gland plate. The 3-pole block occupies one 138 mm slot; verify the busbar takeoff spacing matches your existing distribution block.
Peer comparison — when to look at the 3VA2163-8JQ32-0AA0
The closest functional sibling is the 3VA2163-8JQ32-0AA0, also a 3-pole 630 A SENTRON MCCB, but without the communication function and with a different auxiliary-switch configuration. If your application doesn't need the communication interface or the HQ auxiliary contacts, the 3VA2163-8JQ32-0AA0 is a drop-in replacement on the same frame and busbar footprint — same 138 mm width, same 110 mm depth, same interrupting ratings. The deciding factor is whether you need the status-reporting bus or just a standalone breaker with undervoltage release.