250 A MCCB with ETU320 — selectivity and SCCR headroom
The Siemens SENTRON 3VA2325-6HL32-0AA0 is a 3-pole molded case circuit breaker rated 250 A continuous at 40 °C, carrying the same 250 A all the way to 70 °C — no derating needed across the typical panel ambient range. The ETU320 electronic trip unit gives you adjustable long-time, short-time, and instantaneous protection curves, which means you can coordinate downstream breakers without nuisance trips on motor inrush or transformer energization. Breaking capacity hits 242 kA at 240 V AC and 187 kA at 415 V AC, so it handles high-fault utility feeds or transformer secondaries without cascading upstream.
Fit and footprint
The 3VA2 frame is 138 mm wide, 248 mm tall, and 110 mm deep — a standard MCCB footprint for 250 A class. Front IP40 protection means it's fine in a clean indoor panel; no washdown rating, so keep it out of wet areas. No undervoltage release, no voltage trigger, no ground-fault monitoring on this variant — if you need those, you're looking at a different option code in the 3VA2 family.