Siemens 3VA2325-6HL32-0CC0 — 250 A MCCB with 242 kA interrupting rating
This SENTRON 3VA2325-6HL32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current Iu of 250 A across the 40 °C to 50 °C band before derating begins at 55 °C. Breaking capacity hits 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V — enough to handle high-fault utility feeds and transformer secondaries without cascading upstream.
The 242 kA at 240 V and 187 kA at 415 V mean this breaker can sit at the main incoming position in a panel fed by a large transformer — a typical 2000 kVA transformer at 415 V can deliver around 140 kA prospective fault current, so this unit clears that with headroom. At 690 V the 40 kA rating still covers most industrial 690 V distribution. For selectivity coordination downstream, the ETU320 supports I²t-on and I²t-off modes to tune short-time delay against downstream 3VA breakers.
At 55 °C it drops to 240 A, at 60 °C to 235 A, at 65 °C to 230 A, and at 70 °C to 225 A. The maximum power loss is 40 W — that heat must be managed inside the panel.
Auxiliary and undervoltage release configuration
The integrated auxiliary trip module is order code 3VA9608-0BB24. The base switch without auxiliaries is 3VA2325-6HL32-0AA0. No communication function, no phase failure detection, no ground fault monitoring — this is a plain line-protection breaker, not a power meter.