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 3VA2 frame mounts on a DIN rail or panel-mount base; the 250 A frame size requires adequate clearance for cable bending radius and heat dissipation. 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.