Three poles, 800 A continuous current (Iu), with an ETU320 electronic trip unit that gives you adjustable long-time (Ir 320–800 A) and short-time (tr 0.5–17 s) pickup, plus instantaneous (Ii 1200–8000 A) — so you can shape the curve to the load without swapping the breaker. Breaking capacity hits 187 kA at 240 V, 121 kA at 415 V, and still 53 kA at 690 V, which covers most industrial fault-current scenarios without needing a current-limiting upstream device.
At 800 A continuous and full rated current up to 60 °C ambient (767 A at 65 °C, 703 A at 70 °C), this breaker handles heavy feeder or main-switch duty without derating in most ventilated enclosures. The ETU320 is a basic electronic trip — no communication, no ground-fault module — so it's a straight line-protection device, not a power monitor.