What this MCCB carries and where it fits
The Siemens SENTRON 3VA2463-6JQ32-0HL0 is a 3-pole molded case circuit breaker rated 630 A at 40 °C, designed for line protection in main or feeder distribution panels. It sits in the 3VA2 frame, which is the high-breaking-capacity branch of the SENTRON family — the interrupting ratings tell the story: 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. That puts it squarely in the high-fault-current segment, sized for large transformer secondaries or industrial service entrances where available fault current is substantial. Thermal derating is published across the full temperature band: 630 A at 40 °C, stepping down to 450 A at 70 °C. For a panel that runs warm — say 55 °C inside the enclosure — you are looking at 540 A continuous, so factor that into the load calculation before committing the BOM line. The maximum power loss is 162 W, which matters for enclosure heat rise and fan sizing.
Built-in communication and auxiliary switching
This variant includes a communication function — the 3VA2 frame accepts the SENTRON communication module for remote monitoring and trip indication over PROFIBUS or PROFINET, depending on the module fitted. The auxiliary switch configuration is 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ, giving you five discrete signals for status, trip, and alarm back to the PLC or SCADA. The shunt trip release (STL) is factory-fitted, so remote tripping via a control signal is ready out of the box — no field retrofit of the release coil.
Physical fit and panel integration
Dimensions are 248 mm height, 138 mm width, 110 mm depth — that is 9.76 by 5.43 by 4.33 inches. It mounts on a DIN rail or directly to a backplate via the screw terminals. The 3-pole footprint is standard for this frame size; verify the busbar or cable lug centres match your existing panel layout. The operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C.