The Schneider Electric ENW24188 is a 4-pole switch disconnector from the EasyPact NW range, rated for 4000 A in AC-23A duty at 690 V AC 50/60 Hz. AC-23A covers switching of motor loads and other highly inductive loads — the 4000 A figure is the operational current under that heavy-duty category, not a resistive-only rating, so it handles the inrush and breaking demands of large motor circuits without derating. It carries a suitability-for-isolation mark per IEC 60947-3, meaning it provides a visible break and meets the touch-safe gap requirements for a lockable disconnecting means. The contact position indicator confirms open/closed state at a glance — no guesswork during maintenance isolation. Fault handling is substantial: rated short-time withstand (Icw) is 55 kA for 1 s or 30 kA for 3 s, and the rated short-circuit making capacity (Icm) is 121 kA peak at 50/60 Hz. That combination means the switch can close onto a bolted fault and hold through a delayed upstream breaker trip — important for selective coordination studies in a distribution board. Insulation coordination is rated for pollution degree 4 per IEC 60664-1 (conductive pollution, e.g. dust with condensation) and an impulse withstand voltage (Uimp) of 12 kV.
Mounting and connection — what the drawout form factor means
The ENW24188 is a drawout (withdrawal) switch disconnector on a rail-mounting support. Drawout means the moving portion can be racked out of the fixed cradle for safe inspection or replacement without disturbing the main bus connections — a standard requirement for high-current distribution switchgear where downtime for maintenance must be minimized. Rear connection, vertical or horizontal orientation, with a connection pitch of 115 mm without spreader. Neutral position is left. Overall dimensions: 556 mm wide, 439 mm high, 395 mm deep. The 395 mm depth is the front-to-back envelope — critical for enclosure depth planning when retrofitting into an existing switchboard. Continuous duty rated — no derating for sustained current at the 4000 A AC-23A level under normal ambient conditions (-5 to 70 °C operating).