What this 3VA2325-7MN32-0AD0 is and what it does
The Siemens SENTRON 3VA2325-7MN32-0AD0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current across the full 40 °C to 70 °C ambient range — no derating needed as the panel warms up. It's purpose-built for motor protection, with integrated phase failure detection that catches a lost leg before the winding takes the hit. The 330 kA interrupting rating at 240 V drops to 242 kA at 415/440 V and 187 kA at 500 V; at 690 V it still holds 7.5 kA, which covers most low-voltage distribution faults without cascading upstream. Three auxiliary switches (HQ type) are built in for status feedback to the PLC or DCS.
Panel fit and environmental limits
Footprint is 138 mm wide by 248 mm tall by 110 mm deep — a standard MCCB cutout for a 3-pole frame this size. It lives in an operating range of -25 °C to 70 °C, with storage from -40 °C to 80 °C. Maximum power dissipation is 37.5 W, so factor that into enclosure thermal calculations if you're packing multiple breakers in a sealed cabinet.