Its 25 A continuous rating holds flat from 40 °C to 50 °C, then derates to 21.25 A at 70 °C — that thermal curve matters when you pack this into a warm panel next to other breakers. The interrupting capacity tells the real story: 330 kA at 240 V, 242 kA at 415 V, and 3.75 kA at 690 V.
Trip unit and protection features
The ETU860 electronic release handles the overcurrent protection curve. A shunt trip (STL) is integrated for remote tripping. The breaker also includes a voltage trigger and a trip indicator — useful for fault isolation during commissioning. No undervoltage release or phase failure detection on this variant, so if those are required, this isn't the pick.