The Siemens 3VA2163-7MN36-0AA0 is a SENTRON 3VA molded case circuit breaker in the motor protection version, carrying a continuous current rating Iu of 63 A that holds flat from 40 °C through 70 °C — no derating needed across typical panel ambient temperatures. Interrupting capacity is the headline number here: 330 kA at 240 V, 242 kA at 415/440 V, and 187 kA at 500 V, then a steep drop to 3.7 kA at 690 V. That means this breaker handles high available fault current on 240–500 V systems without cascading upstream — the 690 V figure is low enough that you need to verify coordination if the service voltage is above 500 V.
Maximum power loss is 4 W.