The Schneider Electric ENW13228 is a 4-pole EasyPact NW air circuit breaker rated 1250 A at 40 °C, built for distribution duty in AC networks at 50/60 Hz. The 55 kA Ics service breaking capacity tells you it can reclose after a fault at that level and still carry rated load, not just survive one shot.
Rated insulation voltage (Ui) of 1000 V AC and impulse withstand (Uimp) of 12 kV per IEC 60947-2. The 50 kA Icw for 1 second supports selective coordination studies. Mechanical durability of 20,000 cycles with maintenance and 10,000 without, plus electrical endurance of 5,000 cycles at 440 V without maintenance, puts this in the heavy-industrial bracket — not a daily-switch application, but fine for infrequent load-break or isolation duty.
