What this 3VA2 frame breaker delivers
The Siemens 3VA2463-0HN32-0KF0 is a 3-pole IEC frame 630 molded-case circuit breaker rated for 200 kA breaking capacity at 415 V AC — class E, the highest standard interrupting rating in the 3VA2 family, sized for high-fault utility or transformer secondary applications where a standard 65 kA or 100 kA breaker would not hold. The ETU350 electronic trip unit provides LSI protection: long-time (Ir) adjustable 250 A to 630 A, short-time (Isd) 1.5 to 9 times Ir, and instantaneous (Ii) fixed at 9 times In. That gives selective coordination headroom downstream — the short-time delay lets a feeder breaker ride through a branch fault without tripping the main.
For a BOM-critical line item at this current rating, the ETU350 LSI variant is specified into new switchgear designs and held as a critical spare for existing 3VA2 installations.
Designed for busbar connection in a panelboard or switchgear enclosure — the busbar connection pattern matches the 3VA2 frame 630 footprint, so it lands directly on the existing copper risers without adapter plates.