MCCB for motor protection — ETU350M electronic trip
The breaker carries a 75 W maximum power loss, so factor that into enclosure ventilation if you're packing the panel tight. Rated short-circuit breaking capacity runs from 330 kA at 240 V down to 52.5 kA at 690 V. At 415 V and 440 V it holds 242 kA; at 500 V it's 187 kA.
Above that, derate linearly: 192 A at 55 °C, 188 A at 60 °C, 184 A at 65 °C, 180 A at 70 °C (–). Standard DIN-rail or screw-mount integration in a switchboard enclosure.
Built-in undervoltage release and auxiliary contacts
The auxiliary contact block provides 2 auxiliary switches plus 1 trip-alarm switch (HQ version,). The trip indicator gives a local mechanical flag so a technician can tell at a glance whether the breaker tripped on fault or was manually opened.