Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V — so it handles high-fault scenarios downstream of a transformer or generator tie without cascading upstream.
Continuous current holds at 400 A from 40 °C through 50 °C, then derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C. That means it can signal a remote PLC or SCADA on trip and undervoltage events without an add-on module.
Bolts onto a mounting plate or into a panel bus; no DIN-rail clip on this frame class. The 3-pole block occupies about 138 mm of busbar width. Trip indicator is present, so a quick visual scan confirms a tripped state without opening the door.