The Siemens SENTRON 3VA2063-8HL32-0AA0 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. The interrupting ratings are serious: 440 kA at 240 V, 330 kA at 415 V, and still 52.5 kA at 690 V. That kind of SCCR headroom means it can sit upstream of a fault-heavy distribution panel without worrying about cascading failure.
The IP40 front protection is standard for a panel-mounted MCCB: it keeps tools and fingers out, but it's not sealed against washdown.
