Line protection MCCB with a real thermal curve
Its breaking capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — enough to handle high-fault utility feeds without cascading upstream. The thermal derating is published all the way to 70 °C: 250 A holds steady through 50 °C, then drops to 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. That means you can push the full rating in a ventilated 50 °C enclosure; above that, the curve tells you exactly what you lose per degree.
Auxiliaries and release built in
Dimensions are 105 mm wide, 158 mm high, 70 mm deep.