Low-voltage line wiring device of distribution network

The invention discloses a low-voltage line wiring device of a distribution network. The device comprises a wiring box body, wherein triphase main bus bars in trapezoidal step layout are arranged on the upper side in the wiring box body; triphase bus bar wiring boards are connected with the triphase main bus bars and extend to the upside; the triphase main bus bars are connected to an incoming portof an air circuit breaker and triphase electric meter bus bars that are located on the lower side and in trapezoidal step layout; the triphase electric meter bus bars are connected with a plurality of air circuit breakers; the air circuit breakers are connected with the wiring box body in an overhung manner; the air circuit breakers and the air circuit breaker are arranged sagittally; a leading-out terminal of the air circuit breaker is connected with user dynamic electric meters; leading-out terminals of the air circuit breakers are connected with user single-phase electric meters; the device further comprises a zer