Current transformer

The utility model relates to the technical field of electric power devices, and discloses a current transformer which comprises a current transformer body, a threading groove is formed in the current transformer body, an outer ring is arranged on one side of the threading groove, one side of the outer ring is fixedly connected with one side of the current transformer body, a containing groove is formed in the outer wall of the outer ring, and the containing groove is fixedly connected with the current transformer body. Four through grooves are formed in the inner wall of the outer ring, the four through grooves all communicate with the containing groove, and every two through grooves are oppositely arranged; according to the utility model, through the arrangement of the spring, the connecting cylinder, the arc-shaped clamping plate and the triangular prism, leads with different thicknesses can be clamped and fixed, and the lead is prevented from moving, so that the wiring end of the lead is prevented from loo