Hi all,
I'm currently designing a power supply and have come across a tricky situation. I have 4 leads coming off a toroidal transformer that can be configured in parallel or series, to provide different combinations of voltage and current. This is great, however I would like to be able to switch between these modes without having to take the power supply apart and resolder things. So I designed a configuration to switch between parallel and series orientation, but for it to work properly I need a switch that can, on one setting, close two circuits leaving the other two open and vice versa. But the two circuits being switched on or off cannot make electrical contact (this would short out the transformer which is obviously a huge problem).
A quick diagram might make this easier to explain:

So my question is, does the kind of switch I'm looking for even exist? And if so, what is it called?
Thanks