Multifunctional mutual inductor

The utility model relates to the technical field of mutual inductors, in particular to a multifunctional mutual inductor. The utility model discloses a multifunctional mutual inductor which comprises an outer shell, primary needles and a mutual inductance unit, the primary needles and the mutual inductance unit are arranged in the outer shell, the number of the primary needles is multiple, the mutual inductance unit comprises an annular iron core and a secondary winding wound on the annular iron core, the primary needles penetrate through an inner hole of the annular iron core and are arranged in a mutually spaced and insulated mode, and the secondary winding is wound on the annular iron core. And two ends of the primary needle extend out of the shell to form primary terminals. According to the utility model, the wiring is simple and convenient, and the wiring can be completed by directly inserting on a PCB; and the transformer has various functions, can be used as a zero sequence transformer, a current trans