It carries a breaking capacity of 242 kA at 240 V AC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V — meaning it can safely interrupt fault currents up to those levels across common industrial voltages without upstream cascading. The adjustable thermal-magnetic trip unit covers a setting range from 95 A minimum to 756 A maximum, so it fits motor feeders or transformer primaries where the load current is well above the 63 A frame rating.
Rated for operation from -25 °C to 70 °C ambient, with no derating of the 63 A continuous current across the full temperature range; storage limits are -40 °C to 80 °C.