The products provide protection against earth leakage faults,overloads,short circuits and overvoltage in commercial and domestic installation. The RCBO with both disconnected neutral and phase guarantees its proper actuation against earth leakage fults even when the neutral and phase are wongly connected. The electronic RCBO incorporate a filtering device preventing the risks of unwanted due to transient voltages and transient currents. Positive contact indication in accordance with 16th edition of the IEE wiring regulations