The interrupting capacity hits 330 kA at 240 V and still holds 242 kA at 415 V and 440 V, so it handles high-fault utility feeds without cascading upstream. Maximum current is 4800 A, with a minimum setting of 600 A, giving flexibility for downstream coordination.
That 110 mm depth (4.33 in) is the dimension that matters for enclosure depth.
Auxiliary switching and power loss
This order code includes four HQ auxiliary switches (design of the auxiliary switch: 4 auxiliary switches HQ), which give status feedback for remote monitoring or PLC inputs — useful for tracking breaker state without climbing into the panel. The breaker has no communication function or trip indicator, so it's a straightforward thermal-magnetic or electronic trip unit (the spec doesn't specify the trip type, but the line protection designation suggests an electronic trip for the 400 A frame).