Although traditional electromechanical circuit breakers have a proven track record as efficient and reliable circuit safety devices. Emerging power distribution technologies and architectures such as DC microgrids require advanced breaking performance characteristics (e.g., higher switching speed). The need for faster switching coupled with modern developments in advanced power semiconductor technologies has fueled the growth of semiconductor circuit breaker research and development. The current AC SSCB is a rectifier of silicon which needs auxiliary mechanical devices to accomplish their closure before blame recuperation. Moreover, the new AC SSCB can achieve quick turnoff, after which it can be turned back on without an alternate mechanical device or complicated control, even in a permanent short circuit. In this case, the commutation capacitors are fully charged without auxiliary or main thyristor control. The design and simulated results of a single-phase SSCB are used in this study first to illustrate the execution features of the AC SSCB, followed by the use of three-phase models and results. A flowchart for circuit design is also provided for your convenience.