0randofo 2 months ago ReplyUpvoteYes. Switches have different ratings depending on voltage and current. For the most part, if it will work for 120V, it should be fine for 12V (assuming it is not high current). The short of it is that you don't want to send more power through the switch than it can handle. This is determined by the relationship between voltage and current (as calculated using Ohm's Law).