Cam switches utilize precision cams to coordinate the timing of contact operations. The rotating element engages followers that transfer motion to the electrical contacts. This setup creates reliable switching sequences based on the angular position of the shaft.

Specifying a multi-position cam switch looks straightforward on the surface — pick a rotary switch with enough positions, wire it in, done. In practice, there are enough variables involved that a hasty selection can result in a switch that either underperforms, fails prematurely, or simp