SENTRON 3VA2225-5KP32-0CC0 — 250 A MCCB with ETU850, Active Production
It carries a 187 kA interrupting rating at 240 V and 121 kA at 415 V, with the curve dropping to 5.1 kA at 690 V — the high SCCR at common distribution voltages makes it a strong candidate for main or feeder breaker duty in industrial switchboards where fault current is substantial. The ETU850 release provides communication capability and an undervoltage release is integrated, so the breaker can be tied into a plant-wide power management system and respond to loss-of-voltage events automatically.
In a sealed enclosure or high-ambient machine cell, the 55 °C figure of 238 A and 60 °C figure of 225 A are the ones to size against. Maximum power loss is 50.5 W — account for that in the enclosure thermal budget.