Its 3-pole design handles line protection duty, with a breaking capacity of 242 kA at 240 V and 187 kA at 415 V, which gives substantial SCCR headroom for most industrial distribution panels.
Breaking capacity across voltage — what it means for coordination
At 240 V the breaker clears 242 kA; at 415 V and 440 V it holds at 187 kA; at 500 V it still manages 121 kA. Only at 690 V does the rating drop to 7.5 kA — a steep roll-off that matters if your panel feeds a 690 V bus. For typical 400 V class distribution the 187 kA figure is well above what most upstream transformers can deliver, so selectivity with downstream devices is straightforward.
The breaker measures 138 mm wide, 248 mm high, and 110 mm deep. The depth of 110 mm means it clears most standard enclosure gland plates without interference.