The Siemens SENTRON 3VA2463-5HN32-0JH0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C. It carries an ETU350 electronic trip unit with a shunt trip release (STL).
Ratings and what they mean for fit
The 630 A rating is the maximum continuous current the breaker can carry without tripping at 40 °C ambient. If your panel runs hotter — say 55 °C — the same breaker is rated 575 A, so you need to account for the derate curve when sizing for a warm enclosure. At 70 °C it still holds 520 A. Breaking capacity varies with line voltage: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 17 kA at 690 V. For a 480 V feeder, you're looking at roughly 121 kA of SCCR headroom — well into the high-fault range for most industrial switchboards. Rated insulation voltage is 800 V, so the breaker is rated for use on 690 V systems with margin. The electronic trip unit (ETU350) provides adjustable long-time, short-time, instantaneous, and ground-fault protection curves — typical for feeder or large motor protection.
Integration and panel fit
Dimensions: 110 mm deep, 138 mm wide, 248 mm tall — standard MCCB envelope for a 630 A frame. The breaker ships with a basic switch (3VA2463-5HN32-0AA0) and an integrated auxiliary trip (3VA9688-0BL32). Auxiliary contact configuration is 2 auxiliary switches + 1 trip alarm switch HQ, which covers status feedback and remote trip indication without extra modules. Max power dissipation is 162 W — plan for heat rejection inside the enclosure; don't crowd it next to sensitive electronics without ventilation or a thermal barrier.