It carries a breaking capacity of 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — the 240 V figure is the one to size against for high-fault utility feeds or transformer secondaries in North American panels.
Ratings and thermal derating
Above that it derates stepwise: 30.72 A at 55 °C, 30.08 A at 60 °C, 29.44 A at 65 °C, and 28.8 A at 70 °C. The adjustable response value time tr max. is 1 s, which governs the short-time delay band for coordination with downstream breakers.
Physical fit and auxiliary contacts
Footprint is 76.2 mm wide by 130 mm tall by 70 mm deep — standard 3-pole MCCB spacing for a 4-inch (101.6 mm) DIN-rail or panel-mount cutout. Comes with 3 auxiliary switches HQ (high-quantity) factory-installed.