I am using a solid state relay to drive a 2KW water pump motor. See the attached image of circuit.
The solid state relay getting fried. I think due to inductive “Back EMF” pulse that is produced when the load is switched off.
What could be the solution to get rid of this problem ???
And wow, the schematic is very hard to read. So I stopped spotting errors there. Maybe redraw it in a clear way? For example, keep the clearence between mains and Arduino in the drawing as well... And post it in like triple the resolution :/
And like jurs said, the triac driver is not suitable. And I doubt the triac itself is suitable.
For starters I hope you use a huge heatsink? @ 2kW you're burning 12W in the triac. And the inrush current might be to high for it as well. Or at least ir might take longer then the triac can handle.