What this MCCB carries and where it fits
The Siemens SENTRON 3VA2325-7MN32-0AC0 is a 3-pole molded case circuit breaker rated at 250 A across the full 40 °C to 70 °C ambient range — no derating curve to chase for warm panel environments. Its 330 kA breaking capacity at 240 V (242 kA at 415 V, 187 kA at 500 V, 7.5 kA at 690 V) means it can interrupt very high fault currents without cascading upstream, which simplifies coordination studies in industrial distribution. Designed for motor protection, it includes phase failure detection — a practical feature for three-phase motor circuits where a lost phase can burn out a winding before the overload relay notices. The 3VA2 frame carries two HQ auxiliary switches for status feedback to a PLC or annunciator panel.
Panel fit and integration
Dimensions: 248 mm high, 138 mm wide, 110 mm deep. The 3-pole form factor fits standard Siemens SENTRON mounting accessories and busbar systems. Maximum power loss of 37.5 W should be factored into enclosure thermal calculations — it is not negligible in a sealed cabinet.