Contactors : and how they work

[LukeScotty]

is joining the neutral via the contactor acceptable? like a double pole one or something?

 

[Shakey]

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!

 

[wayne]

indeed thats why you can find contactors with 400v coils

 

[LukeScotty]

what about contactors with a2 at the top and a2 at the bottom of the contactor, are they linked in some way, so it doesn't matter which one you put the neutral in??

 

[wayne]

correct, put a ohmeter on them to see

 

[rumrunner]

Goodmorning all,
Try this link,Welcome to www.wiringmanual.com
Have a nice day

i forgot to say theres a button at top of page for pdf download

 

[MacSparky]

Nice find rumrunner

 

[wayne]

excellent find thank you

 

[LukeScotty]

spot on cheers,