That 570 A is the continuous current the trip unit carries without tripping — sized for a main feeder or large downstream distribution board, not a branch circuit. The 85 kA Icu at 240 V AC (50/60 Hz) is the maximum fault current it can interrupt and still be usable afterward; at 480 V AC that drops to 50 kA Icu, and at 690 V AC to 10 kA Icu. For a 480 V panel with an available fault current of, say, 65 kA, this breaker clears it — but at 690 V you need the higher-rated frame. The MicroLogic 4.3 electronic trip unit provides L (long-time overload), So (short-time short-circuit with fixed delay), I (instantaneous short-circuit), and R (earth-leakage) protection curves. The earth-leakage is integrated — no external Vigi module needed, which saves a pole width in the panel.
Deployment context
Backplate-mounted in a distribution panel, 140 mm wide × 255 mm high × 110 mm deep. IP40 enclosure protection means it's indoors only — no washdown or outdoor exposure without a secondary enclosure.
Overvoltage category IV, utilization category A. Breaking capacities also listed per UL 60947-4-1 at 240 V (85 kA), 480 V (50 kA), and 600 V (20 kA) — relevant for North American installations where UL listing is required.