Hybrid excitation domestic direct-current magnetic field circuit breaker

The utility model relates to the technical field of direct current circuit breakers, in particular to a hybrid excitation domestic direct current magnetic field circuit breaker which comprises a circuit breaker body and a power distribution cabinet, the circuit breaker body is installed in the power distribution cabinet, limiting plates are installed on the inner side face of the power distribution cabinet at equal intervals, and fixed toothed plates are welded to the lower ends of the limiting plates. The beneficial effects of the utility model are that the circuit breaker is reasonable in structural arrangement, when the circuit breaker main body is installed, the lower U-shaped rod and the upper U-shaped rod are pressed towards the interior of the circuit breaker main body, the first L-shaped plate moves downwards, the second L-shaped plate moves upwards, and then the rear side surface of the circuit breaker main body is tightly attached to the limiting plate, so that the circuit breaker main body is insta