Molded case circuit breaker

The utility model discloses a molded case circuit breaker, which comprises a base, an operation cavity and an installation cavity are arranged in the base, a mutual inductor is arranged in the installation cavity, a circuit board is transversely and fixedly arranged on one side of the mutual inductor in the installation cavity, a plurality of wiring terminals are arranged at the front end and the rear end of the base, wiring terminals are arranged in the wiring terminals, and the wiring terminals are arranged in the wiring terminals. And an operation device is fixedly installed in the operation cavity, the two wiring terminals are electrically connected with the operation device through wires, and the wires penetrate through the mutual inductor. By arranging the circuit board and the mutual inductor, the circuit board is matched with the mutual inductor, so that the molded case circuit breaker has a remote monitoring function, the use convenience is improved, a traditional molded case circuit breaker is repla