S272-K6 Circuit Breaker, 2 Pole 6 A Trip Curve K, DIN Rail

Curve K is designed for motor and transformer protection — it handles inrush currents up to 10–14× rated without nuisance tripping, then clears short circuits fast. That 6 A rating means it protects a small motor or a control transformer branch; for a 2-pole breaker, line and load both break simultaneously, which is what you need on a single-phase 240 V or a DC circuit where both legs need isolation.