Do you have any idea about residual current devices? Do you know what residual current device is used for the universal power supply? Do you have any idea about what happens inside your safety switches? Are you looking for a residual current device best for your electric vehicle charging system? If you have no idea about the answers to these questions, no worries at all. This blog post will tell you all about Type B residual current devices used for both purposes (charging of your electric vehicles and universal power supply. We will also share necessary information about different types of residual current devices. Keep reading for more information.