There is a switch labelled “multi” which cycles through different states and returns to the initial value after the max is reached. If you mean a 3 way toggle switch, you will probably need a custom graphic for that.
I’m not sure whether I understand your explanation though. Could you give an example of an existing switch in another plugin, or what you want to connect it to?
You could also use a knob and limit it to 3 stepped values.