Tnx for the update. Some random ideas:
Is it not possible to test the switches on low power and record the data somehow? Even nicer it would be to be able to record data with high power for run time diagnostics. Maybe few mega ohm resistors would be able to shield the voltage/current from (ultra-fast) sensors?
Also I wonder why you need separate switches? Is it just the power requirement or you need to control the firing? It might be simpler to have one switch and adjust the firing sequence using wire length, of course you need diagnostics and I am not sure if you can get any switch in that power range…
Do we have any real electrical engineers here?
