Single-phase electrical automatic box
Scheme:
* Power supply: Cable from panel
* Switch: Double pole circuit breaker
*Load: Single load such as lighting or socket
Connection diagram:
1. Connect the power cable to the switch terminals.
2. Connect the load wire to the switch terminals.
Three-phase electrical automatic box
Scheme:
* Power supply: Cable from panel
* Switches: Three single-pole circuit breakers
*Load: Three-phase load such as motor or machine
Connection diagram:
1. Connect the power cable to the terminals of the appropriate switches.
2. Connect the load wires to the terminals of the appropriate switches.
General designations:
* L: Phase wire
*N: Neutral wire
*PE: Protective conductor (earth)
Notes:
* All connections must be securely insulated.
* Switches must be of suitable type and size for the load.
* For three-phase loads, ensure that the switches belong to the same pole.
* Always follow local electrical and safety codes.