The Siemens 3VA2463-5HL32-0KC0 is a SENTRON molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a 187 kA interrupting capacity at 240 V AC. The 630 A frame size means this breaker handles main feeder or large motor-circuit duty in a 480 V distribution panel. The interrupting rating at 240 V (187 kA) drops to 121 kA at 415 V and 440 V, then to 75.6 kA at 500 V, and 9 kA at 690 V — so the available fault current at the installation point must be checked against the voltage-specific rating before specifying.
Derate linearly: 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, and 520 A at 70 °C. This is a full-frame 630 A MCCB — it needs a dedicated mounting footprint in the enclosure, not a DIN-rail clip. The shunt trip (STL) and two auxiliary switches (HQ) are factory-installed; verify the wiring space on the line side for the control-circuit connections.
The base switch variant is 3VA2463-5HL32-0AA0 — the -0KC0 suffix adds the shunt trip and auxiliary switches. If the panel already uses the -0AA0 version, the -0KC0 is a drop-in replacement with identical frame and trip unit, just with the added control-wiring terminations.