How many phases does a 2 pole contactor have?

Answer 1

Yes, as long as the amperage rating is sufficient. Just don`t wire the second pole until the first pole contacts are spent. Then move the wires over and you effectively get twice the life out of it.

Answer 2

Contactors don't have phases they have poles and a control coil.

When applying voltage to the control coil it closes the poles on the contactor. Common contactors are found 2,3 and 4 poles. A 2 pole contactor would generally be used to control a 208 or 230 volt single phase lighting or power circuit.

The advantage is that you can use smaller wire and less expensive components to operate a large lighting or power load.

Answer 3

yes