A 3 phase solar inverter is a device that converts Direct Current (DC) electricity generated from solar panels to Alternate Current (AC) and distributes it across a three phase power supply. This article reviews some of the best inverters available on Amazon that convert DC power to split-phase or three-phase AC power efficiently. Whether you need one for. Check each product page for other buying options. I've worked with several models, and the power, efficiency, and flexibility vary widely. What is the 3 phase inverter price? 3 phase inverters can be used for high-power loads in uninterruptible power supply systems, mainly in the fields of military, communications, factories, and enterprises.