Integrator's terse spec recap
The Siemens 3VA2225-7HN32-0KG0 is a 3-pole IEC frame 250 molded-case circuit breaker with a breaking capacity class C rating of 110 kA at 415 V AC — that interrupting capacity means it can safely clear a bolted fault up to 110 kA without rupturing, which is the spec that governs upstream fuse or breaker coordination in a high-fault panel. The ETU350 electronic trip unit provides LSI protection: long-time (Ir) adjustable 100–250 A for overload, short-time (Isd) 1.5–10 x Ir for selective short-circuit coordination, and instantaneous (Ii) fixed at 10 x In for fast clearing of bolted faults.
Panel integration and accessories
The breaker ships with a nut keeper kit, a shunt trip (STL) rated 220–250 V DC / 208–277 V AC, one auxiliary switch HP, and one trip alarm switch HP — all factory-fitted, so no separate accessory ordering for the remote-trip and status-signal functions.