The Siemens SENTRON 3VA2163-0KP32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, with an ETU850 electronic trip unit and a massive 440 kA breaking capacity at 415 V AC.
The ETU850 is an electronic trip unit with adjustable N-conductor protection (OFF, 40% to 160% of the phase setting). That lets you dial in the neutral protection for a 4-wire system without swapping the breaker.
Thermal performance
Power loss is 3.1 W max, so it won't cook adjacent devices in a dense lineup.
Communication and lifecycle
This breaker includes a communication function. Lifecycle status is current production, so it is a standard BOM line, not a last-time-buy scavenger hunt.
