The C100S4FM is a Schneider Electric ComPacT NS new generation switch disconnector basic frame — a manually operated, 4-pole disconnect rated for 1000 A in AC-23A duty (switching motor loads including starting and plugging) at up to 690 V AC 50/60 Hz.
The 1000 A AC-23A rating covers motor loads with high inrush — think large pumps, compressors, or conveyors on a 400 V line. Short-time withstand (Icw) is 25 kA for 0.5 s, and short-circuit making capacity (Icm) is 52 kA at 690 V — so the switch can close onto a fault and hold until an upstream breaker clears it. That matters for selectivity studies in a panel.
Fixed-mount, front-front connection (both upside and downside connections are front-accessed), with a 70 mm connection pitch. The IP40 enclosure keeps out tools and fingers but not washdown — it belongs in a dry indoor panel or switchboard. IK07 impact rating means it survives a 2 J hammer blow during installation.