MCBs
In the event of overload or a short-circuit, MCBs disconnects the load circuit.
RCCB
RCCB is to be used with MCBs. The function of the RCCB is to detect earth leakage current and disconnect load to protect people, equipment and buildings against electric shocks.
RCBO
RCBO is installed where there is a need to protect against overload or short circuit on a particular circuit and to protect people against electric shocks.
Distribution Board ("DB")
A DB is used to distribute electrical supply within the building. The main supply cable comes into the board and is then power distributed to the breakers and then to all the circuits. It usually houses all the circuit breakers and earth leakage breakers.
Electrical Switches
Modular switches are used to make and break electric circuit. In other words, they either allow or disallow the current to pass the load.
