The Siemens SENTRON 3VA2163-6HN32-0AA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, with no derating needed from 40 °C up through 70 °C — the full 63 A holds across that entire ambient span. That flat thermal curve simplifies panel sizing in warm enclosures or near other heat sources. The interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, and 121 kA at 500 V; at 690 V it drops to 3.7 kA, so verify your available fault current at the system voltage.
No undervoltage release, no voltage trigger, no communication function, and no ground-fault monitoring — this is a straight line-protection breaker with the ETU350 trip unit as the only adjustable element. Power loss is rated at a maximum of 4 W.