The Siemens 3VA2225-7JP32-0KF0 is a 3-pole IEC frame 250 molded case circuit breaker rated for 250 A continuous current, with a breaking capacity class C achieving Icu=110kA at 415 V AC. The ETU550 electronic trip unit provides LSI protection — long-time (Ir adjustable 100…250 A), short-time (Isd 0.6…10× In), and instantaneous (Ii 1.5…10× In) — making it suitable for main feeder or large motor branch protection in industrial switchgear. The factory-fitted shunt trip (left side, 208–277 V AC / 220–250 V DC) and the auxiliary switch (1 changeover H) plus trip alarm switch allow remote tripping and status feedback without additional wiring in the panel.
Integration Notes
The shunt trip is wired to a separate control circuit — verify coil voltage matches the supply (208–277 V AC or 220–250 V DC) and that the auxiliary switch contacts are rated for the PLC input voltage. The optional N-conductor protection uses an external current transformer; if ordered, the nut keeper kit secures the CT on the neutral bar.