... Name: Distribution Boards 2. Current Rating: 250A Isobar4 Three Phase Type B 250A Distribution BoardsIntroductuionThe market leading low voltage distribution boards ... include 4, 6, 8, 12, 18, 24 three phase ways Combination of incoming devices:AC ContactorManual changeover switchIsolatorCircuit ... options for main incomer Reduced installation time Isobar4 Three Phase Type B 250A Distribution Boards