... The main bus compartment is completely isolated by 11 gauge metal barriers. Bus bars insulated with high dielectric epoxy pass ... 10. ABB, Schneider, GE circuit breaker optional.XGN-12 Metal-clad Medium Voltage Switchgear, Switch Box Rated voltagekV3.6, ... withstand currentkA16, 20, 31.5, 40InsulationRated withstand voltage at working frequency (1min)Phase to earthkV24, 32, 42Between open contactskV24, ...