Three-phase current balancing and automatic adjustment switch

A three-phase current balancing and automatic adjustment switch belongs to the field of electrical distribution equipment, and is characterized in that three one-phase switches which are independent to each other and are respectively provided with an interlocking device are arranged in a shell; the power input ends of the three one-phase switches are correspondingly connected with three phase lines; the output ends of the three one-phase switches are firstly connected in parallel and then are connected with a power input line at a load side; current transformers for monitoring three-phase current are arranged on the three phase lines; an electronic module which can adjust the load of an automatic switch to the corresponding position according to the three-phase current is arranged; the output ends of the current transformers are connected with the input end of the electronic module; and the output end of the electronic module is sequentially and correspondingly connected with the control end of the switching off/on control circuit of each one-phase switch. The utility model can realize the switching of a certain one-phase load among the phase lines of a three-phase power supply circuit, and thereby automatically realizing the uniform load distribution of all the phases, and meanwhile, the utility model has simple structure, economy and practicability, operates reliably, and can be widely used for low voltage power supply and power network operation fields.