What this 3VA2 frame delivers
The Siemens 3VA2325-5HN32-0CC0 is a SENTRON molded case circuit breaker (MCCB) in a 3-pole, 250 A frame, fitted with an ETU350 electronic trip unit for line protection. It's rated for 800 V insulation voltage and carries a breaking capacity of 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 17 kA at 690 V — so it handles high-fault scenarios across common industrial voltages without cascading upstream. The ETU350 release gives you adjustable overload and short-circuit protection curves, which is what you want when coordinating downstream feeders or motor starters. The 250 A rating holds flat from 40 °C to 50 °C, then derates to 240 A at 55 °C, 235 A at 60 °C, 230 A at 65 °C, and 225 A at 70 °C — plan your enclosure ambient accordingly if you're pushing the full ampacity. It ships with 2 auxiliary switches (HQ type) and an undervoltage release (UVR) integrated. The basic switch is order code 3VA2325-5HN32-0AA0, and the auxiliary trip module is 3VA9608-0BB24 — useful for panel documentation and spares planning.
Panel fit and integration
The 3VA2 frame measures 248 mm high, 138 mm wide, and 110 mm deep — standard MCCB footprint for a 250 A class. It mounts on a DIN rail or direct-panel via the rear slots. The 110 mm depth leaves room for rear-access busbars in a typical 600 mm deep enclosure. Power loss is rated at 40 W maximum at full load, so factor that into your thermal rise calculation if you're stacking breakers in a multi-unit lineup.
Environmental and compliance range
Operating temperature spans -25 °C to 70 °C; storage range is -40 °C to 80 °C. The mechanical endurance is 15,000 operations — solid for a main breaker in a panel that sees regular switching. No communication module, phase-failure detection, or ground-fault monitoring on this variant — it's a straight line-protection MCCB with undervoltage release and auxiliary contacts. If you need those functions, you'd step up to the 3VA2 with the appropriate option codes.