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5785 three phase power regulator products are offered for sale by suppliers on Alibaba.com, of which voltage regulators/stabilizers accounts for 58%, solar inverters accounts for 1%, and variable frequency drivers accounts for 1%. A wide variety of three phase power regulator options are available to you, such as single phase, 3.You can also choose from voltage protector, jiw and stabilized voltage three phase power regulator,as well as from copper, aluminum, and pc three phase power regulator,and whether three phase power regulator is white, or black.