The electronic trip unit is an ETU330 with LIG protection: long-time (L) adjustable overload from Ir=10 A up to 25 A, short-time/short-circuit (I) adjustable from 1.5 to 12 x In, and ground-fault (G) protection adjustable from 0.6 to 1 x In with a time delay tg of 0.1 or 0.3 seconds. That makes it suitable for a feeder or main breaker in a panel where you need selective coordination downstream — the ground-fault element catches arcing faults to earth without nuisance-tripping branch breakers. That means the panel builder does not need to order separate accessory kits for remote status indication or emergency trip; the switching contacts are already wired to terminals on the breaker.
Integration into a panel
The 3-pole footprint with the ETU330 and auxiliary switches occupies roughly the same width as a standard MCCB of this frame size — check the drilling plan if you are retrofitting into an existing gland plate or busbar system. The universal release (UNI) draws its 24 V DC from a control transformer or UPS; verify the coil inrush current against your power supply rating.
The 0.1 s or 0.3 s ground-fault delay is enough to ride through a transformer inrush or a downstream GFCI trip.