Hager ADA Electronic Residual Current Circuit Breaker with Overcurrent Protection (RCBO) provides MCB overload protection and RCD earth leakage protection (protects against electrical shocks by direct or indirect contact). This is ideal residential, commercial and industrial applications. This RCDO is designed for din rail mounting in Hager domestic consumer units and 3 phase fuseboards. It is commonly used in light commercial environments such as offices with large fluorescent or LED lighting circuits.