It's designed to interrupt fault currents up to 242 kA at 240 V, 187 kA at 415 V, and 6 kA at 690 V, which means it can handle high-fault scenarios typical in industrial distribution panels without cascading upstream.
The 250 A continuous rating holds flat from 40 °C through 50 °C — no derating needed in a warm enclosure until you push past 55 °C, where it drops to 238 A, then 225 A at 60 °C, and 200 A at 70 °C. If your panel ambient sits at 55 °C or above, size the load accordingly. The shunt trip (STL) is built in, and the 2 HQ auxiliary switches (form C) are integrated — no extra module to snap on.
Drop this into a main distribution panel or sub-feed as a line-side protective device. It dissipates up to 48 W at full load — ensure ventilation or spacing around the breaker, especially if you're stacking multiple units in a row.