The Schneider Electric ENW24119 is a 4-pole EasyPact NW air circuit breaker rated for 1250 A at 40 °C, with a breaking capacity of 50 kA Icu at 220–440 V AC and 42 kA Icu at 690 V AC per IEC 60947-2. It's a drawout-mount unit (slides into a cradle) with rear horizontal or vertical connections, IP40 finger protection, and a push-button control type.
Deployment context — where this part lives
This breaker goes into a switchboard or motor control center (MCC) drawout cradle, not a standalone enclosure. The drawout design means you can rack it out for maintenance or replacement without de-energizing the bus — standard for main or tie breakers in low-voltage distribution switchgear. Rail mounting support and the 115 mm connection pitch (without spreader) match the EasyPact NW cradle footprint. The IP40 enclosure keeps tools and fingers out but doesn't stop water ingress, so it belongs in a dry indoor switchgear lineup, not a washdown area.
That's a main breaker size for a 500–750 kVA transformer at 480 V, or a large feeder in a heavy industrial plant. The neutral protection setting is configurable: 3D (no protection), 0.5 x Ir (3D + N/2), or 1 x Ir (4D) — so you can match the neutral conductor ampacity. Breaking capacity is 50 kA Icu (ultimate) and 50 kA Ics (service) at 220–440 V AC, dropping to 42 kA at 690 V AC. The Ics equals Icu here, meaning the breaker can be reclosed after clearing a fault at its full rating without derating — that's Category B utilization per IEC 60947-2, which is what you want for main breakers where service continuity matters. Maximum breaking time is 25 ms, fast enough to limit let-through energy for downstream equipment. Electrical durability is 6,000 cycles at 440 V and 4,000 at 690 V without maintenance — both per IEC 60947-2. For a main breaker that operates a few times a year, that's decades of service life. The suitability-for-isolation marking (yes, per IEC 60947-2) means it meets the visible-break and isolation requirements for a service entrance disconnecting means.
Designed and tested to IEC 60947-2, the international standard for low-voltage circuit breakers. The pollution degree 4 rating per IEC 60664-1 and the 1000 V insulation voltage confirm it's built for industrial environments with high fault currents and contaminated atmospheres. The IP40 protection and drawout construction are standard for switchgear-mounted air circuit breakers in this class.