Apparatus and method of detecting and classifying faults in circuit interrupter in microseconds

A method of detecting and classifying a fault in microseconds, comprising:

• providing a circuit interrupter that is structured to electrically connect between a power source and a load and comprises:
• separable contacts, an actuator coupled to the separable contacts and structured to open or close the separable contacts, a current sensor structured to sense current flowing through the circuit interrupter to the load, a communication module communicatively coupled to at least one of a cloud server and a user device and structured to transmit and receive data;
• and a controller coupled to the sensor, the actuator, and communication module, the controller comprising at least one of a fault detector and a look-up table, the fault detector comprising a main circuit protector and a fault classifier, the look-up table comprising at least reference data associated with previous normal cycles, the reference data including at least power factors, closing angle ranges and fault classification categories;
• sensing at least the current flowing through the circuit interrupter to the load;
• and
• detecting and classifying a fault based at least in part on a signal from the sensor.