Breaking capacity hits 52.5 kA at 240 V and 32 kA at 415 V — enough for most industrial service entrances and feeder circuits.
Above that, it steps down: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. Plan for it. The 4-pole design switches all phases plus the neutral. There's no N-conductor protection built in — the neutral pole is switched but not monitored for overload. That's standard for line-protection MCCBs in TN-S systems where the neutral is bonded upstream.
