GHML7 MCB 10KA AC 1-4P B C D curve 1-63A Semko CB ... protections with current limited high breaking capacity,mainly applied to AC 50/60Hz circuit with rated volt-age 400V or less ... ,16,20,25,32,40,50,63Poles P1,1P+N,2,3,3P+N,4Rated voltage Ue VAC 230/400Insulation voltage Ui ...