The Siemens SENTRON 3VA2325-6HK32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 250 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. The interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V, which gives selectivity headroom on high-fault utility feeds or transformer secondaries. The ETU340 electronic trip unit provides adjustable long-time, short-time, and instantaneous protection curves, so this breaker can be coordinated downstream of a larger main or upstream of branch panelboards.
Interrupting capacity and selectivity
At 240 V the 242 kA rating places this MCCB in the high-fault tier — suitable for main service entrance or large distribution boards where available fault current exceeds 100 kA. At 415 V the 187 kA rating still covers most industrial switchgear applications. The 7.5 kA at 690 V is a low-end figure for that voltage class, so if the circuit runs at 690 V, verify that the available fault current stays under that threshold. The ETU340 release supports zone-selective interlocking (ZSI) for tighter coordination on large systems.
Physical fit and panel integration
The 3VA2325-6HK32-0AA0 measures 138 mm wide, 248 mm high, and 110 mm deep. It mounts on a DIN rail or directly to a backplate via the standard MCCB footprint. The IP40 protection on the front face is typical for enclosed panel mounting — not rated for washdown or outdoor exposure. The 37.5 W maximum power loss at full load should be factored into the enclosure thermal budget.