Microprocessor controlled power factor controller with 3-phase measurement system and display of various measurement values. This model works in 3-dimensions and is a comprehensive power quality metering and reactive power management unit. This can assess the reactive power on each phase, and provide the suitable response switching 3-phase or 1-phase capacitors as the load demands, using its advanced algorithms. The device is also available with optional data-logger facility or even RS485 MODBUS interface to make it comprehensive in data management and communication. The facility for thyristor switching makes it even more versatile.