Breaking capacity sits at 187 kA at 240 V AC, tapering to 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V — so it can interrupt high-fault currents without cascading upstream, even on 480 V industrial services where the 75.6 kA figure applies. The 4-pole configuration (three phases plus neutral) suits three-phase four-wire systems where the neutral needs overcurrent protection.
The 140 mm width (5.51 in) is the critical dimension for multi-breaker rows: it determines how many fit across a panel. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C, so it handles unheated outdoor cabinets as long as the ambient stays above -25 °C.