The Siemens 3VA2063-6HN32-0DC0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with no derating needed up to 50 °C — per the datasheet it holds 63 A flat through that range, then steps down to 60.6 A at 55 °C and 53.6 A at 70 °C. That thermal profile matters if you are packing this into a warm enclosure; the 63 A frame gives you headroom in a 40 °C panel but you lose about 15 % if ambient hits 70 °C. Breaking capacity is 242 kA at 240 V, 187 kA at 415 V, and 121 kA at 500 V — these are the SCCR values that govern whether this breaker clears a fault without upstream coordination failure. The auxiliary contact version is 2 HQ auxiliary switches. No communication function, no voltage trigger, no phase failure detection — this is a line-protection breaker, not a metering or motor-protection device.
As a Siemens SENTRON product, this MCCB carries the expected IEC/EN 60947-2 certifications. The manufacturer provides RoHS and REACH compliance documentation on request. Specific UL listing status should be confirmed against the exact variant code; the ETU350 release and undervoltage release are standard options within the 3VA2 family.