Line-side protection for high-fault panels
At 415 V it still breaks 154 kA, and at 690 V it holds 17 kA, so the part covers both low-voltage and 690 V industrial feeds in the same frame.
Thermal derating — continuous current vs ambient
The 250 A rating holds flat up to 50 °C ambient. Above that it steps down: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, 223 A at 70 °C. That is the curve a panel builder needs for enclosure sizing — if the panel ambient runs 60 °C, you lose 13 A from the nameplate.
Footprint: 140 mm wide, 158 mm tall, 70 mm deep.