Stable and safe miniature circuit breaker

The utility model discloses a stable and safe miniature circuit breaker, which comprises a base and a cover plate, the cover plate is embedded in the front side of the base, the front side of the cover plate is provided with a clamping mechanism, the clamping mechanism comprises a hollow plate, the hollow plate is fixedly connected with the cover plate, the center of the inner cavity of the hollow plate is movably provided with a gear, and the gear is fixedly connected with the cover plate. And a first long rack is arranged on one side of the top of the gear. The gear is rotated anticlockwise, the first long rack, the second long rack and the short rack are all meshed with the gear, the first long rack drives the first clamping block to move leftwards to be separated from the base, the second long rack drives the second clamping block to move rightwards to be separated from the base, and the short rack drives the third clamping block to move upwards to be separated from the base. The assembly and disassembly