The ENW24140 is a 3-pole air circuit breaker from the EasyPact NW range, rated 4000 A at 40 °C with a breaking capacity of 66 kA Icu at 440 V AC per IEC 60947-2. Drawout mounting lets you rack the breaker out for maintenance without disturbing the busbars, which is standard for switchgear that needs periodic inspection or swap-out.
Deployment context
This breaker is designed for drawout mounting on a rail, which places it in metal-enclosed low-voltage switchgear assemblies — think main incomers or large feeder breakers in industrial distribution panels. Pollution degree 4 per IEC 60664-1 confirms it's rated for harsh conductive environments (heavy dust, condensation), which is typical for heavy industrial settings like steel mills or cement plants.
Rated insulation voltage 1000 V AC and impulse withstand voltage 12 kV mean the breaker's internal clearances are designed for 1 kV systems, so it can be used on 690 V networks with ample margin. Utilisation category B means it's intended for distribution duty with no frequent switching of motor starts; the electrical durability is 5000 cycles at 440 V without maintenance, which is typical for a breaker that stays closed most of its life.