What this MCCB brings to the panel
The Siemens SENTRON 3VA2325-7MN32-0DL0 is a 3-pole molded case circuit breaker rated 250 A continuously across the full 40 °C to 70 °C ambient range — no derating curve to chase when the panel runs hot. It's purpose-built for motor protection, with phase failure detection built in and an undervoltage release (UVR) already fitted as the auxiliary release. The interrupting ratings climb to 330 kA at 240 V and hold at 242 kA through 440 V, then step to 187 kA at 500 V and 7.5 kA at 690 V, so it handles high-fault utility feeds and transformer-secondaries without cascading upstream.
Integration notes for the panel builder
Footprint is 138 mm wide by 248 mm tall by 110 mm deep — standard SENTRON 3VA2 frame size. The auxiliary switch complement is 2 aux switches + 1 trip alarm + 1 electrical alarm (HQ design), and the basic switch order code is 3VA2325-7MN32-0AA0 if you need a bare switch for a different accessory configuration. Max power loss is 40 W, so factor that into enclosure thermal calculations. Operating range is -25 °C to +70 °C; storage can go from -40 °C to +80 °C.