The Siemens SENTRON 3VA2325-7MN32-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous at ambient temperatures from 40 °C up to 70 °C — no derating needed across that band, which simplifies panel sizing in warm enclosures. It is designed specifically for motor protection, with built-in phase failure detection and a trip indicator. The interrupting capacity hits 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, then 187 kA at 500 V, and 7.5 kA at 690 V — so it handles high-fault utility feeds downstream of a transformer but watch the steep drop at 690 V.
Power loss maxes at 37.5 W — factor that into enclosure heat rise if you are stacking several breakers.
The breaker measures 138 mm wide, 248 mm high, and 110 mm deep. The basic switch variant is 3VA2325-7MN32-0AA0; this order code adds the auxiliary and trip alarm switches pre-installed.