The Schneider Electric ENW24121 is a 4-pole drawout circuit breaker from the EasyPact NW range, rated 2000 A at 40 °C and built to IEC 60947-2. It breaks 50 kA Icu at 220…440 V AC and 42 kA at 690 V AC — numbers that tell you this thing is sized for main feeders in a distribution board, not branch circuits.
That's rare at this ampacity — most breakers drop Ics below Icu.
Integration notes
Drawout mounting on a rail — the breaker slides into a fixed cradle, so you can rack it out for maintenance without killing the bus. Rear connections, horizontal or vertical orientation. The 4-pole version (ENW24121) has the neutral on the left. IP40 front face keeps fingers out but doesn't seal against hose-down; this is an indoor distribution breaker, not a wet-location disconnect. Mechanical durability: 20,000 cycles with maintenance, 10,000 without — that's a lifetime in a fixed feeder application.