The interrupting capacity tells you the fault it can safely clear: 187 kA at 240 V, stepping down to 121 kA at 415/440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. The 3-pole construction handles three-phase circuits. A shunt trip (STL) is built in, plus two auxiliary switches and one trip-alarm switch — so remote tripping and status feedback are covered without an add-on module.
Thermal derating and power loss
Above that, derate linearly: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, 340 A at 70 °C. Maximum power loss is 96 W, which matters for enclosure thermal management when multiple breakers are ganged.