Siemens 3VA2225-6JP42-0AA0 SENTRON 4-Pole MCCB, 250 A, ETU550
Rated for 4-pole operation, it handles neutral protection in TN or TT systems without a separate N breaker. The 250 A rating holds flat from 40 °C to 50 °C, then derates linearly to 200 A at 70 °C — critical overhead for panels packed near heat sources. Short-circuit interrupting capacity reaches 242 kA at 240 V, 187 kA at 415/440 V, 121 kA at 500 V, and 4.5 kA at 690 V.
Power loss at full rated current is 48 W maximum. In a sealed enclosure with multiple breakers ganged, account for that dissipation in the thermal budget — 250 A continuous through the poles generates measurable heat. Communication function is built in — the ETU550 supports optional communication modules for remote monitoring and trip-event logging.
Environmental & Compliance
Insulation voltage rated at 800 V. The 3VA2 series carries UL, CSA, and IEC certifications typical for SENTRON — compliance documentation including RoHS and REACH declarations is available through Siemens support channels.