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Old 10-27-2013, 12:29 PM   #1
Jan 2012
Mattawan, MI
Posts: 342
Liked 3 Times on 3 Posts

Is there another way to connect an SSR to a heat sink other than directly to it for heat dissipation?

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Old 10-27-2013, 02:52 PM   #2
raouliii's Avatar
Aug 2011
Ponchatoula, LA
Posts: 1,015
Liked 118 Times on 102 Posts

Not really. What do you have in mind? The heat sink/bottom plate built into the SSR gets hot during use. The only way to transfer that heat away is to physically mate a heat sink to that plate. You can use a smaller heat sink if a fan is used to increase air flow.
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Old 10-29-2013, 02:55 AM   #3
Sep 2009
Papamoa, New Zealand
Posts: 3,789
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I have used the DIN mounted heat sinks with no issues for a year now. Only 1 SSR in the box though.

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Old 10-29-2013, 04:11 PM   #4
Jun 2013
Maynard, MA
Posts: 1,193
Liked 230 Times on 181 Posts

You can connect a heatsink through a metal plate, e.g. a box/enclosure wall, if the surfaces are clean, smooth and bare, and you clamp both parts hard to the plate and use thermal grease on both sides of the plate. You should probably oversize the SSR, or the heat sink in this case though, or add a fan.

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