As a part used to prevent accidents regarding insulation and conductive foreign substance between the circuit breaker terminals,
 Improves phase-to-phase insulation performance by installing it in the slot between the circuit breaker terminals. It can be easily assembled
 even if the circuit breaker has already been installed and in case the two circuit breakers have been installed next to each other, also
 It can be assembled in the space between the two circuit breakers. In addition, it is used in the terminal cover and plug-in base.