The Siemens 3VA2163-5MN36-0AH0 is a 3-pole SENTRON molded case circuit breaker (MCCB) built for motor protection, carrying 63 A rated continuous current (Iu) at 40 °C with no derating needed at that ambient — it holds 63 A through 50 °C, then steps down to 60.48 A at 55 °C and 56.7 A at 70 °C, so factor in panel heat rise if the enclosure runs hot. The ETU350M electronic trip unit handles phase-failure detection and adjustable overload curves, which is what you want for a motor branch circuit — thermal-magnetic breakers won't give you that granularity on the long-time pickup. Interrupting capacity is the headline here: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 17 kA at 690 V.
Maximum power loss is 75 W.