The Siemens SENTRON 3VA2163-8JP32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current across the full -40 °C to 70 °C operating range — no derating needed up to 70 °C ambient. It carries an ETU550 electronic trip unit with adjustable long-time (tr 0.5–25 s) and short-time (tsd max 0.5 s) delay settings, giving you curve-shaping flexibility for selective coordination downstream.
This MCCB delivers 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 53 kA at 690 V.
Communication function is built in, meaning it can talk to a higher-level system for metering or remote trip indication without an add-on module.
Endurance and power loss
Rated for 20,000 latching operations — that's mechanical endurance, not electrical at full load, but it tells you the mechanism is built for years of switching in a distribution panel. Maximum power loss is 3.1 W, which keeps the internal temperature rise low in a crowded enclosure.