... to 1600A 3. all parts made by ourself 4. well tested,best price, experienced factory NF-SS Moulded Case Circuit ... beautiful style, small volume, etc. This breaker applies to the circuit with AC50/60Hz, rated insulationvoltage 660V, max.rated current ... conversion of line and unfrequency.SpecificationsTypePolenumberRated current(A)Circuit breaking capacity(KA)AC(P1/P2)240380415500600660NF30-CW23, ...