The Siemens SENTRON 3VA2163-0HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. That 63 A is the frame size, not a trip setting; the ETU320 electronic overcurrent release lets you adjust the pickup between 95 A and 756 A, so this one breaker body covers a wide range of downstream protection needs.
The 4-pole design with adjustable N-conductor protection (OFF or 100% setting) suits 3-phase + neutral distribution where you need to protect the neutral against overload.
What the ETU320 release means for coordination
The 95 A minimum and 756 A maximum tell you the range of long-time pickup adjustment.
