63 A MCCB with undervoltage release — line protection duty
The Siemens SENTRON 3VA2163-6HN32-0DA0 is a 3-pole molded case circuit breaker rated for 63 A continuous at 40 °C, with the same 63 A rating holding all the way up to 70 °C — no derating needed across the full operating temperature range. Interrupting capacity runs 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That spread covers most industrial distribution panels where high fault current at low voltage is the real concern.