The Siemens 3VA2580-5HN32-0JJ0 is a 3-pole IEC frame 1000 molded-case circuit breaker with a 55 kA interrupting capacity at 415 V AC — class M breaking capacity, meaning it handles the high fault currents typical of industrial main feeders and large sub-distribution boards. The ETU350 electronic trip unit provides LSI protection: long-time (overload) adjustable from 320 A to 800 A, short-time (short-circuit) from 1.5 to 10× Ir, and instantaneous fixed at 12× In. This breaker ships with a factory-installed shunt trip on the left side, rated 110–127 V AC/DC, plus a nut keeper kit for secure mounting.
Integration notes
The shunt trip occupies the left accessory slot; verify that the control voltage (110–127 V AC/DC) matches the coil rating before energizing. The ETU350 is self-powered from the line-side current, so no auxiliary control power is needed for the trip unit itself.