The ENW24231 is a 4-pole EasyPact NW drawout circuit breaker rated 1250 A at 40 °C ambient, with a breaking capacity of 50 kA Icu at 220–440 V AC and 42 kA Icu at 690 V AC. The Ics (service breaking capacity) matches the Icu at both voltage levels, so you get full rated performance after clearing a fault — no derating for repeated operation. Pollution degree 4 per IEC 60664-1 means the clearances and creepage distances are designed for harsh environments — conductive dust, condensation, or heavy contamination. This is not a clean-room panel breaker; it belongs in industrial switchrooms where the atmosphere is not controlled.
Lifecycle and compliance — current production, IEC 60947-2
Electrical durability at 440 V is 6,000 cycles without maintenance — typical for a Category B breaker designed for distribution rather than frequent motor switching. The maximum breaking time is 25 ms, closing response 70 ms, which is standard for this class.