Review on 🔌 Inkbird SSR 40DA Solid State 24-380V by Aaron Parish

I think all the people who melt their SSRs didn't get a reminder to use the heatsink even though the product description says so. I installed mine on top of an old CPU heatsink with a fan, and after running 16A continuously at 120VAC for an hour, the SSR didn't even feel warm. The relay also responds to a 12VDC PWM signal as expected, switching my 120VAC load on and off as expected. , but if you're using a cheap SSR like this, you should probably plan to run it at a fraction of its current rating with an oversized heat exchanger. Luckily, 16A is the maximum current for most home circuits in the US, so that should be enough for most applications unless you start messing around with the wiring. Just make sure you have some way of getting the heat out, and this thing should help you with that.