The Siemens SENTRON 3VA2163-6HN32-0AG0 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 that ceiling. Its interrupting capacity of 242 kA at 240 V (187 kA at 415 V, 121 kA at 500 V, 3.7 kA at 690 V) means it can safely clear a fault of that magnitude without upstream cascading, which is the figure that governs your SCCR coordination study.
The breaker occupies 105 mm width, 181 mm height, and 86 mm depth — standard SENTRON 3VA footprint for a 3-pole frame. It mounts directly into a switchboard or enclosure busbar system; the auxiliary switch and trip alarm are factory-integrated, so no separate wiring of add-on blocks is needed for basic status feedback.