Fault current controller

Patent Granted A Fault Current Limiter (FCL) is a device which limits the prospective fault current when a fault occurs (e.g. in a power transmission network). The term includes superconducting devices and non-superconducting devices, however some of the more simple non-superconducting devices (such as simple inductors or variable resistors) are typically termed[neutrality is disputed] Fault Current Controllers (For example, the ground fault circuit interrupter is commonly used in residential installations).