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Old 02-14-2014, 02:53 AM   #11
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Not arguing, but what types of SSR's do you consider "Cheap"?
This one for example www.ebay.com/itm/New-Solid-State-Relays-SSR-AC24V-AC480V-40A-3-32VDC-D4840-NEW-DC-AC-/331084563189
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Old 02-14-2014, 04:11 AM   #12
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I'm still not trying to argue but does anyone have data on which brands are more reliable?

Or is it subjective?

I've used Crydom, Auber, and Fotek and never had a failure.
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Old 02-14-2014, 04:17 AM   #13
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Actually It's the same SSR Auber selling.
There are many counterfeit Fotek SSR on Whatsoever.

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Old 02-14-2014, 03:40 PM   #14
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http://m.ebay.com/itm/281233498579?nav=SEARCH
Under $4 shipped...its what I'm using with no issues.
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Old 02-14-2014, 04:43 PM   #15
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Originally Posted by atoughram View Post
I'm still not trying to argue but does anyone have data on which brands are more reliable?

Or is it subjective?

I've used Crydom, Auber, and Fotek and never had a failure.
The cheaper ones are more likely to be bought by those who wire them incorrectly or without properly connected heat sinks this makes the failure rate of the cheap ones seem higher than they really are... I bought three and they all work perfect.
You will see threads were people go through three of them before learning the error was theirs and rarely do they report back admitting it.
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Old 02-17-2014, 12:07 AM   #16
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Not arguing, but what types of SSR's do you consider "Cheap"?
All of the ones we commonly buy can fail and when they do, it's common to fail in the "on" position. I'm not making an argument for buying higher quality SSRs but rather not to ever rely on the SSR to ensure that your elements are OFF when swapping plugs, or draining tanks.
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Old 02-17-2014, 01:11 AM   #17
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All of the ones we commonly buy can fail and when they do, it's common to fail in the "on" position. I'm not making an argument for buying higher quality SSRs but rather not to ever rely on the SSR to ensure that your elements are OFF when swapping plugs, or draining tanks.
another reason a main selector switch is a good idea along with a light to indicate when the element is powered...
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Old 02-17-2014, 12:23 PM   #18
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another reason a main selector switch is a good idea along with a light to indicate when the element is powered...
Or a dedicated, switched, DPST, NO, contactor for both hot legs before the element, rather than a main power switched contactor, or both. The key is to make sure one has a means to insure that for the element power, off means off, and an SSR alone cannot do that.
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Old 02-17-2014, 12:33 PM   #19
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Or a dedicated, switched, DPST, NO, contactor for both hot legs before the element, rather than a main power switched contactor, or both. The key is to make sure one has a means to insure that for the element power, off means off, and an SSR alone cannot do that.
that is what I meant although I didnt explain it well...
I use a three position on/off/on switch to control two relays... one for each ssr/ element this way only one element can be powered at a time of course as well... all together this adds about $20 to the total cost of the build but worth its weight in gold for safety.
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