The Schneider Electric iSCB2 is a compact and intelligent 4-Pole (4P) Earth Leakage Circuit Breaker (ELCB) / Residual Current Circuit Breaker (RCCB) from the Acti 9 range. The designation "20N2" indicates it has a 20A rated current and is a double-pole (2-module) device with a N (Neutral) pole that is also protected and switched.