I see many post and products around the web about the anti spark switch systems but I could not get how to achieve such circuit without switch and without 3rd wire.
I had an ESC from hobbywing with built in spark proof circuit and it actually did the job well in that regard. I had no extra cable or circuit. just my 2 main power leads and zero spark.
Any idea how such circuit is achieved or if any such product is available?
Using solid state relay is feasible but they are heating quite a lot and not so good in that regard so would be my last option.