The Schneider Electric A9N19657 is a DPN Vigi residual-current circuit breaker (RCBO) from the Acti9 range, combining overcurrent protection and earth-leakage detection in a single 1P+N module. Rated at 25 A (In) with a B-curve magnetic trip (3–5 × In), it is sized for resistive and light inductive loads such as lighting circuits, socket outlets, and small appliances in residential or commercial distribution boards. The 30 mA earth-leakage sensitivity provides personal protection against indirect contact and additional fire protection per IEC 60364. Breaking capacity is 6 kA Icn at 230 V AC, 50/60 Hz, conforming to EN/IEC 61009-1 and 61009-2-1.
Occupies 4 modules of 9 mm pitch — 36 mm total width for the 1P+N pole configuration. Neutral is on the left; the toggle switch provides local ON/OFF indication. Tunnel-type terminals accept up to 10 mm² flexible or 16 mm² rigid cable, one conductor per terminal. Operating altitude is limited to 2000 m; derating applies above that.
Standards compliance includes EN/IEC 61009-1 and 61009-2-1. The device carries tropicalisation class 2 per EN 61009 and limitation class 3. Ambient storage range is -40 to 60 °C; relative humidity tolerance is 95 % at 55 °C.