Q. What is a double pole switch used for?

The twin pole diverter switch can be found in a variety of home and commercial appliances and wiring configurations due to its ability to convert two lines of current to another set of wires. A two-pole switch is frequently used to control both a light and a fan at the same time. Despite being on separate circuits many light switches also function as fan controls and vice versa. Some further examples of industrial uses are; the medical field is a major market for the double pole footswitches which are typically wired for redundancy as a safety feature in the context of the application.