Asea Brown Boveri Limited S201U-K5 Circuit Breaker

ABB S201U-K5 is a one-pole miniature circuit breaker engineered for DIN-rail mounting in low-voltage distribution panels, rated at 5 A and designed to protect a single branch circuit in 240 V AC systems; it belongs to ABB's System pro M compact family, a modular line of DIN-rail compatible breakers. This 1P device provides overcurrent protection with a compact form factor that simplifies installation and replacement across ABB-compatible panels. The S201U-K5 designation identifies the 5‑amp unit within ABB’s S201U series, and this model is tuned for standard 240 VAC distribution with a DIN rail footprint compatible with common panelboard layouts; suitable applications include protecting lighting and outlet circuits, small machinery feeds, and other branch circuits in commercial or residential electrical installations that rely on modular, plug-in protection.