The Schneider Electric A9F17101 is a 1P+N (Single Pole + Neutral) Residual Current Circuit Breaker with Overcurrent Protection (RCBO) from the Acti 9 series. This compact device combines residual current protection (30 mA sensitivity) and overload/short-circuit protection in a single unit. The "B-type" tripping characteristic and 1 A rating make it suitable for protecting sensitive circuits like lighting or small appliances in residential and commercial installations.