Power conversion box

The utility model relates to a power conversion box. The power conversion box comprises a main loop converting device, a net voltage signal converting device, a power connecting device, a box body, a box cover and a double-head double-throw-knife switch, wherein a partition plate is arranged between a left box body and a right box body; holes are formed in the partition plate; the net voltage signal converting device is arranged above an installation plate of a box body of the right box body; the double-head double-throw-knife switch is arranged below the installation plate of the box body of the right box body; the power connecting device is arranged on the left box body; the box cover is arranged on the upper part of the right box body; and the double-head double-throw-knife switch is connected with the main loop converting device when closed toward to the right side, is connected with the power connecting device when closed toward to the left side and is open when positioned at a middle position. By the po