The 3VA2163-5HN32-0CH0: Breaking capacity varies sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. Thermal derating is mild through 50 °C — the breaker holds full 63 A up to that point. At 55 °C it derates to 60.6 A, at 60 °C to 58.3 A, at 65 °C to 55.9 A, and at 70 °C to 53.6 A.
Leave at least the manufacturer's recommended side clearance for arc-chamber venting and thermal dissipation.
Integrated auxiliaries and release
That gives you remote status indication (open/closed/tripped) without an add-on block.