At 240 V it interrupts 187 kA, at 415 V and 440 V it holds 121 kA, and at 690 V it still clears 3.4 kA. That matters when coordinating with downstream breakers in a selective scheme: you can dial the short-time delay to ride through inrush without nuisance trips, then let the downstream device clear a bolted fault. The 5.4 W maximum power loss stays low enough that you can pack breakers tight in a panel without cooking the enclosure. Above that it derates: 60.6375 A at 55 °C, 58.275 A at 60 °C, 55.9125 A at 65 °C, and 53.55 A at 70 °C. If your panel sits near a steam line or a curing press, that derating curve tells you the real ampacity — not the nameplate number.
Three auxiliary switches HQ are built in, giving you status feedback for PLC or SCADA without adding an external contact block. Communication function is onboard, so it can report trip events and current values over the bus — no separate communication module required for basic integration.