Its interrupting capacity hits 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V — meaning it can clear a bolted fault at the low-voltage side of a distribution transformer without the arc flash energy escalating to a catastrophic event. That kind of headroom makes it a candidate for high-fault locations like a main service entrance or a large motor control center feeder.
The breaker holds its full 80 A rating from 40 °C through 50 °C, then derates to 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep, with an IP40 front face.