The interrupting ratings climb to 187 kA at 240 V and 121 kA at 415 V, dropping to 9 kA at 690 V. That kind of short-circuit capacity puts it squarely in high-fault applications like large motor control centers or main feeders in industrial plants.
Ratings that matter for the panel
That's unusual; most breakers start dropping at 50 °C or 55 °C. The minimum interrupting rating is 600 A, and the maximum is 4,800 A, covering the range you'd expect for a 400 A frame. Power loss maxes at 66 W, which matters for enclosure heat load calculations.
The auxiliary switch block (2 aux + 1 trip alarm + 1 electrical alarm) is also pre-configured, saving panel wiring time. The line protection design means it's set up for feeder duty, not motor protection — pair it with a separate overload relay for motor circuits.
