When a current exceeding 30 mA passes through the human body the individual will be at serious risk of a fatal electric shock if the current is not interrupted in a timely manner.
Zero phase current transformer Type A/ Type B made by Xiamen ZTC Technology Co.,Ltd is widely used in GFCI,residuel current device and other electrical safety protection device like EV Charging.
These devices that shuts off an electric power circuit when it detects that current is flowing along an unintended path, such as through water or a person. It is used to reduce the risk of electric shock, which can cause the heart to stop or cause burns. They can also prevent some fires, like when a live wire touches a metal conduit.