It carries an ETU850 electronic trip unit, meaning the protection curve is programmable and the breaker can communicate status over the integrated communication function — not a thermal-magnetic fixed-trip device. Breaking capacity runs 187 kA at 240 V, 121 kA at 415/440 V, 79 kA at 500 V, and 4.25 kA at 690 V.
Above that it derates linearly: 154 A at 55 °C, 148 A at 60 °C, 142 A at 65 °C, 136 A at 70 °C. The depth of 86 mm includes the arc chamber — verify clearance to the enclosure door.
Trip unit and auxiliary contacts
This is the version with three HQ auxiliary switches for remote status indication. Maximum power loss is 25.5 W at rated current. That matters for thermal management inside a sealed enclosure — if you pack multiple breakers at full load, the cumulative heat needs to stay within the panel's dissipation budget.