News of October 30, 2024, information from the State Intellectual Property Office shows that Shanghai Liangxin Intelligent Electrician Co., Ltd. and Shanghai Liangxin Electric Co., Ltd. have obtained a patent called "A Leakage Circuit Breaker", authorized announcement number CN 221885029 U, The application date is December 2023.

patent shows that this application provides a leakage circuit breaker, which relates to the technical field of low-voltage electrical appliances, including a circuit breaker module and a leakage module spliced with each other. The leakage module includes a leakage transformer, a first circuit board assembly and a first connection terminal. One end of the conductive piece is connected to the first connection terminal, and the other end of the conductive piece passes through the leakage transformer and is directly connected to the electromagnetic system in the circuit of the circuit of the circuit breaker module, the connection terminals (such as a connection frame, a connection board, etc.) located at the end of the circuit in the circuit breaker module can be reduced, that is, it is avoided that the connection terminals are arranged between the leakage module and the electromagnetic system, thereby the overall volume of the leakage circuit breaker can be reduced. The leakage transformer is electrically connected to the first circuit board assembly, so that when the leakage information shows that the circuit breaker has a leakage fault, the first circuit board assembly controls the circuit of the circuit breaker module to be disconnected in time, thereby realizing leakage protection.