Switchable current transformer

The utility model discloses a switchable current transformer. The switchable current transformer comprises a transformer shell, a switching mechanism and a switching mechanism, a first wiring terminal is arranged on the right side face of the mutual inductor shell, a U-shaped iron core is arranged at the right end of the interior of the mutual inductor shell, a primary winding is wound around the right end of the U-shaped iron core, the input end of the primary winding is electrically connected to the output end of the first wiring terminal, and a second wiring terminal is arranged on the left side face of the mutual inductor shell. A supporting column is arranged between the left ends of the upper inner wall and the lower inner wall of the mutual inductor shell, conductors are arranged at the upper end and the lower end of the supporting column, and the output ends of the conductors are electrically connected to the input ends of the second wiring terminals. The switching mechanism is rotationally connected