Power distribution circuit breaker

The utility model discloses a power distribution circuit breaker, relates to the technical field of power distribution circuit breakers, and comprises a protective cover and a circuit breaker body, the two sides of the protective cover are both provided with two first sliding grooves, each first sliding groove is internally provided with a sliding block in a sliding manner, and the two corresponding sliding blocks are fixedly connected with a mounting plate together. Fixing mechanisms are arranged on the surfaces of the two mounting plates, the circuit breaker body is slidably arranged in the protective cover through the two fixing mechanisms, and a protective mechanism is arranged in the protective cover. According to the utility model, through the protection mechanism arranged in the protection cover, each wire is respectively connected with the circuit breaker body, then the circuit breaker body is pushed, and then a power supply is turned on, so that the magnet adsorbs the iron block, and the circuit brea