What this MCCB does on your line
The SENTRON 3VA2163-6HN32-0DC0 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. Breaking capacity runs 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. No communication function onboard, no ground-fault monitoring version, no voltage trigger. This is a straight-ahead thermal-magnetic or electronic-trip MCCB with UVR for safety circuits that need to drop the breaker on loss of control power.
Three-pole format means it occupies three module spaces on the DIN rail or mounting plate. The 63 A frame is compact enough for a distribution sub-panel but still leaves finger room for lug torqueing on 2/0 AWG or smaller conductors.