The Siemens 3VA2463-5HN32-0HG0 is an IEC frame 630 molded case circuit breaker from the 3VA2 series, rated for 55 kA interrupting capacity at 415 V (class M). It is fitted with an ETU350 LSI electronic trip unit, set for a nominal current In of 630 A, with overload protection Ir adjustable from 250 A to 630 A and short-circuit protection Isd adjustable from 1.5 to 9 times Ir. The instantaneous pickup Ii is fixed at 9 times In. The breaker includes a factory-installed shunt trip on the left side, rated for 24 V AC 50/60 Hz or 24–30 V DC, and provisions for one auxiliary switch.
Key Ratings and Fit
The 55 kA Icu at 415 V places this breaker in the M (medium) breaking capacity class, suitable for industrial distribution panels where fault currents are moderate but still require robust interruption — typical for secondary switchgear or large motor control center feeders. The ETU350 LSI trip unit provides adjustable long-time (Ir), short-time (Isd), and instantaneous (Ii) protection, allowing coordination with downstream devices. The 630 A frame and adjustable Ir range (250–630 A) mean it can be downsized to protect a feeder as low as 250 A without changing the breaker frame.
Integrated Accessories
The shunt trip on the left side operates on 24 V AC or 24–30 V DC, enabling remote tripping from a safety circuit or emergency-stop system. The provision for one auxiliary switch allows status feedback (open/closed) to a PLC or indication panel. These accessories are factory-installed, reducing field wiring and panel-build labor.