What this MCCB is and what the ratings mean for your panel
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 is designed for line protection (feeder or main) and ships with one auxiliary switch plus one trip alarm switch (HP type), giving you a remote status signal without adding a separate module.
Panel integration and mounting
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.