Relays etc

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Old 05-22-14, 11:40 AM
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Relays etc

I need some way to switch 8 wires at the same time. Four carry 220v (max 5Amp) and 4 are control wires with virtually no current. I will need a relay or contractor with 8 N/O contacts. Maybe I will need to combine two relays, but I donít know what is available or where to look. I am running out of ideas. Can you help?
 

Last edited by LeonF; 05-22-14 at 12:03 PM.
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Old 05-22-14, 05:53 PM
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Welcome to the forums.

When switching high and low voltages like that always use two relays.
You didn't mention what coil voltage you were looking for.

The control relay will be easy to find.
A 4P N.O. contactor/relay for 220v will be a little tougher.
Allen Bradley products are available world wide. The link below illustrated what they look like. The contact amperage is higher than you need but it will last longer.

Industrial Control - Definite Purpose Contactors


.........................................* * * * * * * * * * * * * * * * * * *

Not to get off topic here..... I met a gentlemen from your location in one of my supply houses. He was buying electrical/electronic parts to bring home with him or to have shipped back. We spent an hour talking. He told me all about the power, or lack of, in the area as well as the lack of refrigeration, lack of electricians, lack of generators and the biggest lack..... ice.
Who knows... you may see me there one day soon.
 
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Old 05-23-14, 12:51 AM
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Thanks PJmax.

I appreciate the suggestion of keeping the voltages apart. That also solves the problem of getting one unit with 8 poles. 2 x 4 poles will be readily available.

The coil voltage will be 220v.

Last night a local retired electrician responded on Facebook. We are getting together later on today. It looks like I am on the right track.
 
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Old 05-23-14, 10:42 PM
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Feel free to post another question if you need further information.
 
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Old 05-24-14, 04:55 AM
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I would use something like

https://www.johnstonesupply.com/stor...ep?pID=G32-226

for a socket and

https://www.johnstonesupply.com/stor...ep?pID=G35-767

for a relay , for the low amperage circuit .

Two of these

https://www.johnstonesupply.com/stor...ep?pID=L37-122

for the power circuits . If I did not make a mistake , all have 240 VAC coil voltage .

God bless
Wyr
 
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Old 05-24-14, 11:13 AM
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Thanks WyrTwister

I was thinking along the same lines.

L
 
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Old 05-24-14, 11:38 AM
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Old 05-25-14, 03:55 AM
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Yes , however , I have found it is cheaper to use 2 of the 2 pole contactors . In stead of one 4 pole contactor .

Just do not get the 1 pole contactor that looks like a 2 pole contactor . :-(

God bless
Wyr
 
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