The ENW24232 is a 4-pole drawout circuit breaker from Schneider Electric's EasyPact NW range, rated 1600 A at 40 °C and built for distribution duty per IEC 60947-2. The drawout cradle lets you rack the breaker out for maintenance or replacement without disturbing the bus connections, which saves hours on a line shutdown.
The 50 kA Icu at 440 V AC is the ultimate breaking capacity — the breaker can clear one fault at that level and still be functional afterward. The Ics (service breaking capacity) is the same 50 kA at 440 V, meaning it can clear multiple faults at that rating and remain in service, which is unusual at this current level. At 690 V the Icu drops to 42 kA, still a strong figure for a 1600 A frame. The Icw short-time withstand is 50 kA for 1 second at 440 V, which gives you the thermal margin for delayed tripping in selective coordination — you can let a downstream breaker clear first without the main tripping prematurely.
Mounting and integration — drawout cradle on rails, rear connection
Mounts on a rail via the drawout cradle — the breaker racks in and out, so you can isolate it without unbolting bus bars. Connection pitch is 115 mm without a spreader, and the rear connection position suits fixed-panel buswork. The IP40 enclosure keeps dust out but is not rated for washdown; install in a clean indoor switchgear lineup.
Electrical endurance and duty cycle
Electrical durability at 440 V is 6,000 cycles without maintenance — enough for daily switching in a distribution feeder. Maximum breaking time is 25 ms, closing response 70 ms, so it clears faults fast enough to limit arc-flash energy in a properly coordinated system.