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    Thread: Solid State Relay Question

    1. #1
      Berty's Avatar
      Berty is offline Ex SuperMods club
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      Solid State Relay Question

      I haven't played with SSR's at all so I'm after some advice. I have a machine that runs a D2W110DD Solid State Relay which I believe is kaput. I'm trying to fiugre out what I could replace it with as I cannot seem to locate the original part. Data sheet below.

      https://www.digchip.com/datasheets/p...W110DD-pdf.php

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      SSR replacement

      Solid sate relays perform the same function as normal relays except that they switch when the AC voltage crosses thru zero so there is usually minimal inrush current on transformers, they also do not produce the usual back EMF spike from the coil as there is none, so no need for quenching diodes, that said I find Fleabay the best place to shop, I have even purchased some DC versions in the past, the relays all share a common foot print, so the fixings are all the same, your one has quick connect terminals, most have screw terminals.
      So long as the rated working voltage meets or exceeds the supply voltage and the current is not greater than the relay is rated for then you are all good. If the one you have is Cactus you would do well to find out what caused its demise before whacking in the next victim, regards Michael.

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