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Old 10-27-2013, 12:29 PM   #1
owentp
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Default Solid state relays

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
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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
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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
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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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