Hi Gus,

By the looks of it, it just got too hot. And since it still works, it
seems to be well made.

My experience with triacs (the power component in the SSR) is that they
drop a considerable amount of voltage, like 2 volts. Multiply that by 15
amps or so, and you're talking real wattage. You need a good heat sink.
Steel isn't very good.

Best regards, Bob

On Tue, Dec 16, 2014, at 05:52 PM, NOPE9 YES wrote:
> Here are photos of the SSR
> https://www.flickr.com/photos/48808176@N08/sets/72157649733342556/
>=20
> The FOTEK SSR-25DA was switching power to a clothes dryer heating element
> at 240VAC.
> 12VDC was supplied to the + side of the relay input through a 500 ohm
> resistor.  A micro-switch ( normally open )
> grounded the + side to shut off the heating element.
>=20
> Is the FOTEK likely to be counterfeit ?
> Although it is hard to tell in the photos , it appears the heatsink got
> very hot.  I had it screwed to the metal frame of the appliance.  I did
> not fasten it tightly or use thermal paste.
>=20
> I tried the SSR on the bench ( using 120VAC and a 200W lamp ) and it
> still appears to work.
>=20
> Does the PIClist have any suggestions ?
>=20
> Gus in Denver

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