The CE certification of the circuit breaker is the “main requirement” that forms the core of the European Directive. It is required in the European Community’s Resolution (85/C136/01) of May 7, 1985, “Technical Coordination and Standards for New Methods”. The “main requirements” of the development and implementation of the directive have a specific meaning, that is, the product only does not endanger the basic safety requirements of the safety aspects of humans, animals, and goods, rather than the general quality requirements. The coordination directive only specifies the main requirements, and the general directive requirements are Standard tasks. If the product complies with the relevant requirements of the relevant directives, the CE mark can be attached, and the CE mark cannot be determined by the general quality requirements of the relevant standards.