Thankyou John - I have never been good at electrics :(
So if I understand you correctly, you’re saying:
at 12 volts the switch can take 10 amps,
at 42 volts the switch can take 9 amps,
at 80 volts the switch can take 8 amps,
at 118 volts the switch can take 7 amps,
at 156 volts the...