What this 63 A MCCB carries
The Siemens SENTRON 3VA2063-7HM36-0AA0 is a 3-pole molded case circuit breaker rated 63 A continuous across the full operating range from 40 °C to 70 °C — no derate needed as the panel warms up. Breaking capacity hits 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, then 187 kA at 500 V, and 3 kA at 690 V.
Panel fit and physical constraints
Front protection is IP40, so it's fine for general indoor panel use but not washdown. The 3 W maximum power loss means minimal heat rejection into the enclosure. Optional motor drive is available as a field-fit accessory if remote switching is needed later.
This is a current-production part — no end-of-life notice on record. The SENTRON 3VA series is Siemens' mainline MCCB platform, so spares and replacements are standard catalog items.