Discuss Contactors : and how they work in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net

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Yes Luke, this is done as well.

I have used large contactors where there are fixed terminals for the neutral in and out, or an additional set of contacts for the neutral

The contactor you have shown is 3 pole, so could be used for three phase (L1, L2 and L3)
or single phase using two of the three contacts to switch line and neutral


- i dont know if you are aware, but a lot of industrial three phase systems (particularly those supplying motors) dont use the neutral anyway!
 

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