The 3VA2225-5KP42-0AL0: Interrupting capacity runs 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 4.5 kA at 690 V. That covers most industrial service-entrance and distribution panels without needing a current-limiting upstream breaker. Physical footprint is 181 mm high, 140 mm wide, and 86 mm deep — fits standard SENTRON 3VA mounting patterns. Panel builders will find the 86 mm depth leaves clearance in shallow enclosures.
Trip unit and thermal derating
The ETU850 electronic trip unit provides adjustable overload and short-circuit protection curves. It includes a trip indicator and communication function for status monitoring. Rated current holds at 250 A up to 50 °C ambient. Above that, it derates: 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. If your panel runs hot, factor the derate into your load schedule rather than oversizing the frame. Auxiliary switching includes two auxiliary switches, one trip alarm switch, and one electrical alarm switch — enough for remote status and fault annunciation without an add-on module.
Sourcing and compliance
Rated insulation voltage is 800 V. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Power loss at full load is 48 W maximum — plan ventilation if packing multiple units in a sealed enclosure.