Switches are not rated for any voltage as they do not need a neutral (white wire) hooked up to them in a normal switch to light scenario. Things such as receptacles or light fixtures, which require a neutral to carry a current to them, are rated for certain things (example: 120v 240v or Hospital/range grade receptacles). Plus the single-pole switch was laying around from when I replaced them in my house so I did not have to buy anything extra. You can try it with a different switch, but these are more common.