DC circuit breakers mainly include neutral busbar circuit breakers (NBS), neutral busbar grounding circuit breakers (NBGS), metallic circuit breaker (MRTB), and earth circuit breaker (ERTB).
DC circuit breaker topologies are complex and diverse. Based on the different key breaking devices in a DC circuit breaker, it can be divided into three categories: mechanical DC circuit breakers, all-solid-state DC circuit breakers, and hybrid DC circuit breakers that combine mechanical and solid-state switches.
