The adjustable Ir (70–100 A) lets you match the overload protection to the actual load current, so a 75 A motor feeder or an 85 A lighting panel both land on the same breaker with a screwdriver turn. The Ii range of 5–10× In (500–1000 A magnetic pickup) gives flexibility for inrush from motor starters or transformers; set it high enough to avoid nuisance trips on start-up, low enough to clear a bolted fault fast.
This is a DIN-rail-mount MCCB, sized for a standard 3-pole footprint in a distribution board or motor control center. The clamp terminals accept copper or aluminum conductors up to the frame's rated cross-section — no lug kit needed for most panel builds. Wire the UVR supply through a normally-closed contact from an upstream safety relay if you need a coordinated emergency-off chain.