Existing reviews of Solid state relay, 3 phase, SSR-120AA, 120A 70-280V AC to AC
Do we need a heat sink for solid state relay?
We want to use your solid state relay to perform a compact reversing three phase circuit @ 480VAC. Do we need a heat sink, since we will only cycle once or twice per day. The on time will be for multiple hours.
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Hi, Joyce. As long as the output current of the solid-state relay is larger than 10A, then it is recommended to use a heat sink for several hours of operation.