What this MCCB carries and where it fits
The Siemens 3VA2325-7HL42-0AA0 is a SENTRON molded case circuit breaker (MCCB) in a 4-pole configuration, rated for a continuous current Iu of 250 A with no derating needed from 40 °C through 70 °C — it holds 250 A flat across that entire ambient band. The interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 7.5 kA at 690 V — so it's sized for high-fault industrial panels where a standard MCCB would weld shut. It carries the ETU320 electronic trip unit, adjustable for N-conductor protection (OFF / 50% / 100%), and the response time tr is settable from 0.5 s to 17 s.
Panel fit and mounting
The case measures 248 mm high, 184 mm wide, 110 mm deep — a standard footprint for a 250 A frame MCCB. Front face carries IP40 protection, so it's fine in a ventilated enclosure but not washdown. Rated insulation voltage Ui is 800 V; power loss maxes out at 37.5 W — factor that into your enclosure thermal budget.