Summary:According to National Standard GB51348-2019, the terminal circuits in storage warehouses and electric vehicle charging stations should be equipped with current-limiting electrical fire protection devices. The current-limiting electrical fire protection devices can effectively overcome the drawbacks of traditional circuit breakers, air switches, and monitoring equipment, such as large short-circuit currents, long time to cut off short-circuit currents, large arcs and sparks generated during short-circuit, and short service life. When a short-circuit fault occurs, they can rapidly limit the short-circuit current at the speed of microseconds to achieve arc extinguishing protection, thereby significantly reducing electrical fire accidents and ensuring the safety of personnel and property in the usage areas.

Keywords:Electric Vehicle Charging Poles; AC Charging Poles; Slow Charge Poles; Short Circuit Protection; Overload Protection; Electrical Fire Prevention