Return to TheElectricBrewery.com
  [ Shop ]   [ Building ]   [ Using ]   [ Recipes ]   [ Testimonials ]   [ Gallery ]   [ FAQ ]   [ About Us ]   [ Contact Us ]   [ Newsletter ]

Log inLog in   RegisterRegister   User Control PanelUser Control Panel   Private MessagesPrivate Messages   MembershipClub Memberships   SearchSearch   MemberlistMemberlist   Photo AlbumsPhoto Albums   Forum FAQForum FAQ


Question about contactors

 
Post new topic   Reply to topic   Printer-friendly view    TheElectricBrewery.com Forum Index -> Brewing Equipment and Setups
View previous topic :: View next topic  
Author Message
brewmaster




Joined: 12 Jan 2019
Posts: 31
Location: Oscoda, MI


PostLink    Posted: Wed Apr 10, 2019 6:00 pm    Post subject: Question about contactors Reply with quote


        Register to remove this ad. It's free!
Getting ready to wire my components up, and realized that the contactor I bought for the main power input switch was a 50A (3pole) that has a 208/240V coil rather than a 110V coil. Am I correct in assuming that the coil would not operate properly if I only wired 110V to it, or can I get by with it as is?
Back to top
701pilot




Joined: 10 May 2016
Posts: 50
Location: northern california

Drinking: Bohemian Pilsner,Caribou Slobber, Munich Helles, Weissbier, Black Bute Porter, RIS, Irish Red Ale

Working on: Milk Chocolate Stout


PostLink    Posted: Wed Apr 10, 2019 6:06 pm    Post subject: Reply with quote

It probably won't operate at all.
_________________
Mark

I can't change the laws of physics but with enough horse power I can chase it into submission.
Back to top
kal
Forum Administrator



Joined: 12 Dec 2010
Posts: 11116
Location: Ottawa, Canada

Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter


PostLink    Posted: Wed Apr 10, 2019 6:12 pm    Post subject: Reply with quote

701pilot is correct. If the coil needs 208V-240V, it likely will not close if fed 110V. It may just hum. If it does close, I wouldn't trust it to stay closed.

If building to our instructions you only need a 2 pole contactor (not 3). If you want to buy the right one, the 50A one with 110-120V coil is here: https://shop.theelectricbrewery.com/collections/ssrs-relays-contactors/products/50a-250v-dpdt-contactor-120v-ac-coil

Cheers!

Kal

_________________
Our new shop with over 150 new products: shop.TheElectricBrewery.com
We ship worldwide and support our products and customers for life.
Purchasing through our affiliate links helps support our site at no extra cost to you. We thank you!
My basement/bar/brewery build 2.0
Back to top
View user's photo album (21 photos)
brewmaster




Joined: 12 Jan 2019
Posts: 31
Location: Oscoda, MI


PostLink    Posted: Thu Apr 11, 2019 8:21 pm    Post subject: Reply with quote

Thanks Kal....a side question for you...the 240V contactor that I had also has a push button in the middle of the top face....what is that for???
Back to top
kal
Forum Administrator



Joined: 12 Dec 2010
Posts: 11116
Location: Ottawa, Canada

Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter


PostLink    Posted: Thu Apr 11, 2019 8:28 pm    Post subject: Reply with quote

I have no idea. You'd have to ask whoever sold it to you. Are you sure it's a pushbutton?

Kal

_________________
Our new shop with over 150 new products: shop.TheElectricBrewery.com
We ship worldwide and support our products and customers for life.
Purchasing through our affiliate links helps support our site at no extra cost to you. We thank you!
My basement/bar/brewery build 2.0
Back to top
View user's photo album (21 photos)
701pilot




Joined: 10 May 2016
Posts: 50
Location: northern california

Drinking: Bohemian Pilsner,Caribou Slobber, Munich Helles, Weissbier, Black Bute Porter, RIS, Irish Red Ale

Working on: Milk Chocolate Stout


PostLink    Posted: Fri Apr 12, 2019 2:14 pm    Post subject: Reply with quote

That button is the manual way to engage the contactor. Push it in and contact is made. It is spring loaded to break the contact when you let go of the button. It usually is used to test the contactor without engaging the start circuitry.
_________________
Mark

I can't change the laws of physics but with enough horse power I can chase it into submission.
Back to top
kal
Forum Administrator



Joined: 12 Dec 2010
Posts: 11116
Location: Ottawa, Canada

Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter


PostLink    Posted: Fri Apr 12, 2019 2:27 pm    Post subject: Reply with quote

Ah! Ok, yes, some relays / contactors have manual engagement modes. Not needed here unless you want one for testing purposes. They're often completely mechanical.

My safe start relay actually has one - it's the red button on the front:



Kal

_________________
Our new shop with over 150 new products: shop.TheElectricBrewery.com
We ship worldwide and support our products and customers for life.
Purchasing through our affiliate links helps support our site at no extra cost to you. We thank you!
My basement/bar/brewery build 2.0
Back to top
View user's photo album (21 photos)
Display posts from previous:   
Post new topic   Reply to topic   Printer-friendly view    TheElectricBrewery.com Forum Index -> Brewing Equipment and Setups All times are GMT
Page 1 of 1
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum



Forum powered by phpBB © phpBB Group