The Schneider Electric ENW24221 is a 4-pole switch disconnector from the EasyPact NW series, rated 800 A in AC-23A duty at 690 V. The 1000 V rated insulation voltage (Ui) and 12 kV impulse withstand (Uimp) give it headroom for 690 V distribution systems where fault currents can spike. It's listed to IEC 60947-3, the standard for disconnect switches, and carries an isolation suitability mark — meaning when it's open, you can work downstream with confidence that the circuit is physically separated. The short-time withstand rating (Icw) is 66 kA for 1 second and 36 kA for 3 seconds, which tells you this switch can ride through a fault long enough for an upstream breaker to clear it — critical for selective coordination in a distribution panel. The making capacity (Icm) of 143 kA AC means it can close onto a bolted fault without welding its contacts shut. That's the kind of muscle you need on a main or feeder disconnect where fault levels are high.
This is a fixed-mount switch disconnector, not a draw-out or plug-in unit. It bolts to a base plate, with rear connection terminals. The dimensions are 537 mm wide by 352 mm high by 297 mm deep — that's a substantial footprint, so plan your enclosure depth and gland-plate layout accordingly. Connection pitch is 115 mm without a spreader, which matters when you're laying out busbars or cable lugs.