The ABB S204‑D25 is a 4‑pole miniature circuit breaker (MCB) from ABB’s System pro M / S200 series, engineered for reliable overload and short‑circuit protection in low‑voltage AC distribution systems. It features a Type D trip characteristic, which provides enhanced tolerance for high inrush currents typically seen in motor and transformer loads, while still offering dependable protective operation. This DIN‑rail mountable breaker has screw‑type terminals and a compact design suitable for residential, commercial, and light industrial panels. It also supports add‑on accessories such as auxiliary contacts and shunt trips for expanded control and monitoring
