The utility model belongs to the technical field of electrical components, and especially to a current protection switch. The prior art has the problem of inconvenience in installation and application. In order to solve the problem in the prior art, the technical scheme provided by the utility model is that: the current protection switch comprises a switch housing; the upper surface of the switch housing is provided with an electrical component box; an upper end of the electrical component box is provided with a switch; and the upper surface of the switch housing is provided with an upper surface mounting plate, and a lower surface is provided with a mounting buckle. According the current protection switch, the upper surface of the switch housing is provided with the upper surface mounting plate and the lower surface is provided with the mounting buckle, a novel mounting method is increased on the basis of the prior art, chassis installation and surface installation are available, the application range of a current limiting protector is further expanded, the design is improved, the installation is convenient, product application is standardized, installation with other equipment is available, and the current protection switch is beautiful and tidy.