The Siemens SENTRON 3VA2163-6HL32-0HL0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection duty, carrying a continuous current of 63 A across its full ambient temperature range from 40 °C to 70 °C. Its interrupting capacity hits 242 kA at 240 V, drops to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 3.7 kA at 690 V — the high short-circuit ratings at the lower voltages tell you this breaker is sized for high-fault industrial distribution panels where the available fault current is substantial.
Maximum power loss is 4 W, which keeps panel heat rise manageable even in densely packed enclosures. The basic switch supplied is order code 3VA21636HL320AA0.