The Siemens SENTRON 3VA2063-5KP32-0HH0 is a 3-pole molded case circuit breaker rated for 63 A continuous current (Iu) at 40 °C through 50 °C, with no derating needed in that band. Interrupting capacity is what sets this frame apart: 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 3.4 kA at 690 V.
The 86 mm depth stays within most enclosure clearances, but the height at 181 mm means you'll want to verify the gland plate clearance if you're replacing a shorter frame.
Auxiliaries and communication
The breaker also carries a communication function and an other measurement function, though the evidence doesn't specify protocol. Power loss is 5.4 W maximum, negligible for panel thermal budgeting.