630 A MCCB with high interrupting capacity for line protection
It carries a maximum breaking capacity of 330 kA at 240 V, stepping down to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V — meaning it can safely interrupt fault currents up to those levels without cascading upstream, which is the key spec for selectivity coordination in a distribution board. Ambient temperature derating is published from 40 °C through 70 °C: 630 A at 40 °C, 612 A at 45 °C, 593 A at 50 °C, 575 A at 55 °C, 557 A at 60 °C, 538 A at 65 °C, and 520 A at 70 °C.
Dimensions are 248 mm height, 138 mm width, and 110 mm depth. The 162 W power loss at full load should be factored into the enclosure thermal calculation, especially in a sealed cabinet with no forced ventilation.