The Siemens SENTRON 3VA2163-7HN32-0KA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the top of the enclosure's thermal rise. That 63 A holds steady at every temperature step in the evidence, so the breaker delivers its full nameplate even when packed into a crowded switchboard. At 500 V it still clears 187 kA. That puts this breaker in the high-fault-current tier — sized for the main incoming feeder or a large sub-distribution board where the available fault current from the transformer is substantial. The shunt trip release (STL) is built in — no auxiliary switch fitted.
That covers unheated electrical rooms, outdoor switchgear cabinets, and most industrial environments.