It carries a continuous current rating of 100 A at 40 °C through 50 °C, derating to 91 A at 70 °C ambient — so the full 100 A holds across typical panel internal temperatures, and you only lose headroom above 55 °C. That means the thermal element tracks overloads to 240 A frame rating, and the magnetic instantaneous trip is fixed — no interchangeable trip units on this variant. Breaking capacity is the headline number here: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and still 17 kA at 690 V.
Power loss is 25 W maximum at rated load. That's moderate for a 100 A MCCB — plan for ventilation if you're packing multiple units in a sealed enclosure, but no forced cooling required in a standard ventilated panel.