The Siemens 3VA2450-5JP32-0AH0 is a 3-pole IEC frame 630 molded-case circuit breaker (MCCB) rated 500 A continuous, with a breaking capacity class M of Icu=55 kA at 415 V AC. The ETU550 electronic trip unit provides LSI protection: long-time (overload) adjustable from 200 A to 500 A, short-time (selective coordination) adjustable 0.6–10× In, and instantaneous fixed at 1.5–14× In. This makes the breaker suitable for feeder circuits where coordination with downstream devices matters, not just a simple thermal-magnetic cutoff.
What is on the nameplate — auxiliary switches and trip alarm
Factory-fitted on this variant: two changeover auxiliary switches (H configuration) and one changeover trip-alarm switch. That gives the panel builder or controls integrator remote status of the breaker position (open/closed) plus a separate signal when the breaker has tripped on fault — no need to add field-installed accessory kits for basic indication. The neutral conductor protection is optional via an external current transformer, up to 160 % of In, per the description.