The Residual current Circuit Breaker with Overload protection – RCBO, 40A 1P + N, 4,5kA from the company Electro House is a special modular device that performs two functions at once - the control of the power grid and its protection from all overvoltages and failures. The RCBO replaces with itself two electric devices - it is the RCCB and MCB. Its main differential mechanism can be checked for good condition and performance using the “Test” button built into it. The RCBO will completely protect against electric shock in the event of short circuits and damage to devices or insulating material of the wire. It also protects your appliances and your property from complete ignition or other accidents. This differential current device is easily mounted in a distribution  boxes along with other devices. Using it you ensure the correct operation of the network and, accordingly, of all electrical devices connected to it. You can buy the RCBO 40A from the manufacturer ElectroHouse at the most optimal price for you.