60amp Power-in Relay - Home Brew Forums
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Old 12-05-2010, 02:42 AM   #1
Sparky
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Nov 2008
Muir Beach, California
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I have a question regarding finding a 60amp 240V, power-in relay to control my (designed system). Any suggestions??

- 60 amps, 240V power, single phase input
- This is the first relay, controlled by (basic) switch (1 NO Key Selector Switch 2 Position Maintained)
- I will be (down-line) controlling (2) 5500W elements (or more) and (2) pumps

I am trying to find a relay that will handle this methodology.
I can't find a 60 amp DPDT (or DPST), 240V, with 120V coil.
Not sure about wiring a definite purpose contactor.

Any help appreciated.



 
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Old 12-05-2010, 05:13 AM   #2
jasonsbeer
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Jul 2009
Central Iowa
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Maybe run two 30A contactors or power relays in parallel for each leg?

60A is a lot of juice.


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Old 12-05-2010, 06:20 AM   #3
Quaffer
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Dec 2008
Snohomish, WA
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Use two 30A contactors, one for each element. The key switch can feed other switches that control each contactor coil.
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Old 12-05-2010, 09:49 AM   #4
BrewBeemer
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Old lighting contactors or better yet a AC compressor relay will have the amperage capacity your looking for found on old equipment being demolished. This gets the price down to free. Only out of pocket would be a coil replacement, Honeywell AC units usually have 24 volt relay coils.

 
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Old 12-05-2010, 04:23 PM   #5
Budzu
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Chattanooga, TN
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Here's a contactor rated 65amp, 3 pole (you can use the 3rd pole if you have a neutral line), with 120v coil.
Little pricey but things this size will be.
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Old 12-05-2010, 05:39 PM   #6
Sparky
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Thanks for all the input! I am basically building a more robust "Kal" electric brewing system and want to run both heating elements at the same time since I am doing back-to-back batches.

The 60amp relay would replace the 30amp power relay in this photo (power-in relay):
http://theelectricbrewery.com/contro...-part-2?page=7

I would still have (2) 30amp relays (with switches) controlling the heating elements.

I have a 200amp service with a 7.5kW (photovoltaic) solar system. Have not paid an electric bill in 5 years and have plenty reserve. Thus, the 60amp system is no problem.

 
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Old 12-05-2010, 06:04 PM   #7
BrewBeemer
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Quote:
Originally Posted by Budzu View Post
Here's a contactor rated 65amp, 3 pole (you can use the 3rd pole if you have a neutral line), with 120v coil.
Little pricey but things this size will be.
I find it rather cheap considering what is out there.

 
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Old 12-05-2010, 07:42 PM   #8
jasonsbeer
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Jul 2009
Central Iowa
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Just thinking about this... The first house I ever owned had 60 amp service. You're brewing system is going to use more power than my first house!
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Old 12-08-2010, 06:24 PM   #9
MarkInOhio
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Nov 2010
Avon Lake, Ohio
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Here's the one I chose:

http://cgi.ebay.com/ws/eBayISAPI.dll...m=400053529772

 
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Old 12-09-2010, 02:33 AM   #10
SpaceCoastBrew
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Nov 2009
Florida
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Sparky, I'm doing a 60A setup as well and went with this relay:

http://www.surveillent.net/elkelk920...contactor.aspx

It's built identical to the others that Kal references. It comes in its own enclosure but is easy to remove. On a side note, if you haven't already you'll also want to put fuses on the feed to the 30A relays. Good luck.



 
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