This whitepaper discusses the evolution of circuit breakers towards more efficient and sustainable solutions, focusing on the transition from mechanical to solid-state circuit breakers (SSCBs). It explores the limitations of traditional circuit breakers, the benefits of SSCBs in reducing faults and wear, and the potential of wide bandgap devices like GaN and SiC, as well as innovative solutions like B-TRAN for bidirectional current flow capability in AC power systems.