We manufacture a broad range of Furnace Transformer that finds application in supplying power to an electric furnace, which lowers the high voltage to the furnace-required lower voltage. The range is is energy saving with low power loss. The cooling modes are self-cooling mode, forced water cooling mode, etc. A high current furnace transformer is provided with low-voltage windings arranged in a closed delta configuration within the transformer enclosure. Bus bar terminals are mounted exterior to the enclosure for providing electrical connection with the low-voltage windings.