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Watch out for counterfeit SSR's!
Posted: Tue Dec 23, 2014 12:02 pm
by bob64
http://canada.ul.com/safetyalerts/ul-wa ... e-13pn-52/" onclick="window.open(this.href);return false;
Saw some of the fotek SSRs being recommended from ebay and found this alert warning of fakes. Granted the pictures show the AC/AC relay, but i'm sure it applies to the other ones you see on ebay.
Re: Watch out for counterfeit SSR's!
Posted: Tue Dec 23, 2014 4:59 pm
by teoman
Just had a look at the pictures of the ones that are on the way, and they look pretty much like the fake ones.
I will have to open them up to have a look at what is inside to determine if they are garbage or not.
Re: Watch out for counterfeit SSR's!
Posted: Tue Dec 23, 2014 6:13 pm
by rpress
That explains the crap Fotek SSR I got from eBay. It was rated 100A, and at only 25A it was unreasonably hot. Mine looked like the one in the counterfeit photo.
Re: Watch out for counterfeit SSR's!
Posted: Tue Dec 30, 2014 4:09 pm
by bob64
Found a better picture of a real and a fake Fotek.
[img]
http://openenergymonitor.org/emon/sites ... s/SCRs.jpg[/img]
The one on the right is a genuine one.
Re: Watch out for counterfeit SSR's!
Posted: Tue Dec 30, 2014 4:30 pm
by jdurand
I've got some that claim to be high quality copies.
I once was getting quotes on having a container load of items made in Kuala Lumpor and they sent back the First Article. Looked great, right down to copied the trademarks off the parts I used in the original! I told them to NOT do that, I didn't care what brand parts were as long as they weren't marked with someone else's trademark.
Re: Watch out for counterfeit SSR's!
Posted: Wed Jan 21, 2015 4:38 pm
by teoman
WARNING THE FAKE ONES WILL BURN YOUR HOUSE DOWN!!!!
I just got the 4 fotek ssr's that purchased, they were obviously cheapo copies. I installed one the first one, it started out fine, the led on it was flashing according to the pulses from the rambo. But then i noticed a burning plastic smell. And i noticed that it was stuck on the open position. Tried again, it was dead. The moment you give it a little pulse it just switches to the ON position and never goes off. Shut off the power when bed reached 120 degs.
Removed that relay, checked all wiring. Installed second relay. I switched the power on and smoke came pouring out from one side. Damn.
Installed the third one, same behaviour, the moment it receives any signal from the rambo it switched to the ON position and never stops. And it gets damn hot.
Had i left the room i would have probably burned the house down.
I wont even bother installing the 4th one.
So dont bother with the cheapo ssrs or you will burn your house down. Even my cheapo mossfet solution did much much better. All it needed was a good heatsink and proper wires.
I think i will build a proper one.
