The Siemens SENTRON 3VA2325-6KQ32-0AA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current with an ETU860 electronic overcurrent release. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V — numbers that tell you this breaker handles high-fault locations like main switchboards or large motor control centers without cascading upstream. The 800 V rated insulation voltage (Ui) means it's comfortable in 480 V and 600 V class systems as well.
Current rating and thermal performance
The 250 A rating holds flat from 40 °C all the way to 70 °C ambient — no derating curve to chase in a warm enclosure. That's a solid advantage for a panel sitting near a furnace line or in a non-conditioned electrical room. The maximum power loss is 37.5 W, which helps when sizing enclosure ventilation.
Protection and communication
Communication function is built in, which means this breaker can talk to a BMS or SCADA system for remote trip indication and power monitoring — no separate comm module needed.
Dimensions are 248 mm high, 138 mm wide, 110 mm deep — fits standard MCCB panel cutouts. Operating temperature range is -25 °C to 70 °C; storage range goes from -40 °C to 80 °C. An optional motor drive is available for remote switching.