Two way switch is an electric switch the medium of this switch can be controlled from one place to another by electric lamp fan or anything electrical device. 2 way switch is 3 wire system new harmoised cable colours. two way switch means having two or more switches in control lamp fac etc different location. wiring two way switch light. two way switch can be operated from any of the switch indpndntly means whatever be the position of other 2way switch ON & OFF. you can control the fan or light with other switch. there 2 way switch methods of making two way switch connection one 2 wire control another is 3 wire control.
Magnetic Contactor.
Magnetic contactors are used for high power applications they allow a lower voltage and current to switch a much higher power circuit so they are generally larger and more heavy duty than control relays enabling them to switch higher power loads on and off for many thousands of cycles.

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