It may seem trivial, the switch serves to "select" a slice of the electrical system that we want to isolate or select partially from the complete system. but why select it? splitting the circuit has been particularly useful to be able to put in safety (without the risk of a throw-in voltage the accidental) and allow for maintenance without risk to the installer.In this section you will find the isolators of the Cabour, Betterman, Finder, Weimuller, phoenix, Lovato of various voltages and resistances to the torque.