ABB UniGear Marine Medium-Voltage Switchboard

ABB UniGear ZS1 medium-voltage switchgear for marine main bus distribution. Air- or vacuum-insulated, withdrawable VD4 vacuum circuit breakers. Voltage 6.6-12 kV, current up to 4000 A. Used on cruise ships, large LNG carriers, FPSOs and DP3 drillships. Internal-arc classified IAC AFLR 50 kA / 1 s.