What this MCCB carries and where it lands
The Siemens SENTRON 3VA2325-7MN32-0CC0 is a 3-pole molded case circuit breaker rated at 250 A continuous at 40 °C, with a symmetrical breaking capacity of 330 kA at 240 V AC. That's a lot of fault-clearing muscle — sized for the main incomer or a heavy motor feeder where the available fault current is high. The design is explicitly for motor protection, which means the trip curve is shaped to ride through motor inrush without nuisance tripping. Rated current holds flat at 250 A all the way up to 70 °C ambient — no derating needed in a hot panel. Power loss maxes out at 40 W, so ventilation planning is straightforward. Physical footprint: 138 mm wide, 248 mm tall, 110 mm deep. Mounts on a DIN rail or directly to a backplate in the standard SENTRON 3VA format.
Breaking capacity — the so-what
At 240 V it interrupts 330 kA; at 415 V that drops to 242 kA, and at 690 V it's still 7.5 kA. The steep roll-off above 500 V is typical for this frame size — the arc extinction physics don't scale linearly. For a 400 V-class panel (common in European industrial mains), 242 kA SCCR means it can sit downstream of a transformer with negligible impedance and still hold coordination.
Motor protection and auxiliary hardware
Phase-failure detection is built in. The auxiliary switch block carries two HQ contacts, and the undervoltage release (UVR) is fitted as standard — wired to a safety relay or E-stop string, it drops the breaker on loss of control voltage. The basic switch core is order code 3VA2325-7MN32-0AA0, so this variant adds the UVR and auxiliary contacts at the factory.