Earth fault or earth leakage as minimal as it may be, are capable of destroying poorly insulated equipment (such as transformers, motors, generators and power lines in energy distribution systems) causing fire or shock hazards, which could endanger lives. Prolong overloading (over current) of equipment causes the same. Delab's protection relays are specially designed to monitor these unexpected situations and isolate power distribution systems when necessary, thus preventing undesirable consequences. Optimizing the usage of power has become so important in today’s world. In fact, some of the power supply companies had implemented rules and regulations for consumers to utilize their power usage by setting a required power factor for them to achieve. To achieve the required power factor, automatic power factor controller will be necessary as this device contributes in monitoring and maintaining the required power factor of a power network. Automatic power factor controllers are used with capacitors. It regulate the capacitors (compensation) to achieve the targeted power factor. Delab's protection relays and automatic power factor controller comes in a compact, microprocessor-based circuitry design with excellent standard features that could be easily familiarized.