How to wire an external switch for a 20 plate meter

1, the biggest feature of the wiring behind the board is that it can be used in the replacement or maintenance of the circuit breaker, without having to rewire, only the power supply of the previous level is disconnected.

2, plug-in wiring: in the complete set of devices on the mounting plate, the first installation of a circuit breaker mounting base, the mounting base of 6 plugs, circuit breaker connection plate with 6 sockets.