The utility model discloses a phase line and neutral line type residual current operated circuit breaker which comprises an insulating housing, the insulating housing is subdivided into two adjacent parts by a partition plate, and the phase line and neutral line type residual current operated circuit breaker comprises a circuit breaker phase pole of a first part and an electric leakage protection pole of a second part. The phase line and neutral line type residual current operated circuit breaker is mainly characterized in that a neutral line circuit and an electric leakage protection device are arranged in the same plane, the closing and the disconnection of a moving contact of a neutral pole are controlled by a phase pole actuating mechanism, the electrical connection process is simple, the length of a neutral line electrical loop is shortened, the running power loss of a product is reduced, and the structure is more reasonable. Simultaneously, the moving contact of the neutral pole is mechanically coupled with the phase pole actuating mechanism through a drive rod, thereby leading the moving contact of the phase pole and the moving contact of the neutral pole to realize the coordinated action, the moving contact of the neutral pole is firstly closed and then disconnected, and the structure is simple.