The BKFCP series electrical fire-resistant current-limiting protector is a new type of electrical safety monitoring device that can accurately detect the current in a power circuit in real time and quickly limit the short-circuit current at a microsecond speed to achieve arc extinguishing protection. It integrates multiple functions such as voltage, current, frequency, temperature (optional), and leakage current (optional) monitoring, and possesses intelligent analysis capabilities. When a short-circuit fault occurs in the protected circuit, the electrical fire-resistant current-limiting protector can quickly limit the short-circuit current at a microsecond speed to achieve arc extinguishing protection. Current limiting is completed before the current generated by the short circuit reaches the actual short-circuit current, thereby preventing fire accidents caused by continuous arcing and sparking during electrical circuit short circuits, which could ignite flammable materials, and ensu