The Schneider Electric iDPNa is a 16 Amp, 1P+N (Single-Pole + Neutral) Residual Current Circuit Breaker (RCBO) from the Acti 9 series. This compact device integrates the functions of a miniature circuit breaker (MCB) for overload and short-circuit protection, and a residual current device (RCD) for earth leakage protection into a single modular unit.