The interrupting capacity hits 187 kA at 240 V, 121 kA at 415/440 V, and still holds 75.6 kA at 500 V, so it handles high-fault scenarios downstream of a large transformer or on a stiff utility feed.
That means a panel designed for 63 A at 40 °C still holds the same rating if the enclosure runs hotter. The interrupting capacity of 187 kA at 240 V and 121 kA at 415 V gives substantial SCCR headroom for most industrial distribution panels; the drop to 3 kA at 690 V tells you this is a 480 V class breaker, not a 690 V one. The auxiliary switch configuration includes two auxiliary switches, one trip alarm switch, and one electrical alarm switch (HQ type), giving four discrete signals for PLC or SCADA inputs.
Panel integration and physical fit
The undervoltage release and communication module add some depth on the side, but the overall envelope stays within the SENTRON 3VA family's typical panel cutout.