The Siemens SENTRON 3VA2463-6KP32-0JH0 is a 3-pole molded case circuit breaker rated for 630 A continuous current at 40 °C. It's designed for line protection and carries a shunt trip release (STL) plus two auxiliary switches and one trip alarm switch (HQ). The 242 kA breaking capacity at 240 V tells you this thing clears serious fault current without upstream coordination headaches — it's sized for main or heavy feeder duty in a 480 V panel.
Thermal derating and trip range
The 630 A rating holds at 40 °C ambient. Above that, it steps down: 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. If your panel runs hot — say a packed enclosure near a furnace line — the 50 °C derate to 570 A is the number to spec against, not the 40 °C sticker. The adjustable thermal-magnetic trip range spans 945 A minimum to 5,670 A maximum, so you can dial in the protection band for the downstream cable or bus.
Breaking capacity across voltages
Breaking capacity drops as voltage climbs: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. The 690 V figure is the one to watch if you're on a 600 V class system — 9 kA is modest, so verify the available fault current at that voltage before committing the BOM line.
Panel fit and auxiliaries
Dimensions are 248 mm high, 138 mm wide, 110 mm deep. That's a standard SENTRON 3VA form factor — mounts on a mounting plate or DIN rail adapter. The shunt trip (STL) allows remote tripping from an E-stop or safety relay; the two auxiliary switches and one trip alarm switch give you status feedback to a PLC or indication lamp. Communication function is onboard, so it can talk to a higher-level monitoring system without an add-on module.