FERRITE CLAMP

PROBLEM TO BE SOLVED: To provide a ferrite clamp capable of suppressing occurrence of magnetic saturation well and stably, by holding a sheet having a permeability smaller than that of a pair of split cores stably between the abutting surfaces of the pair of split cores.SOLUTION: The opening edge of a case 6B is formed to extend farther than the abutting surface of a split core 4B held by the case 6B in the surface direction of the abutting surface, and disposed on the same plane as the surface of a sheet 50 disposed on the abutting surface. Consequently, when the case 6A is closed in the case 6B around a hinge 8, the case 6B surrounds the sheet 50 held by the abutting surfaces of the pair of split cores 4A, 4B from both ends of a bus bar in the axial direction and the width direction, thus suppressing the sheet 50 from slipping down to the outside of a holding case 6.