... :3, 4 1.SpecificationSwitch Rating Heat Current (A) Number of Poles Assorted Fuse Rated Current (A) 1603, 4NT004,6,10,16,20 ... ,400630NT3315,335,400,425,500,6302.DimensionModel Assorted Fuse A B C D a b øc HR17-160/30 NT00106200832056625ø7HR17-250 ... ø11HR17-630/40 NT334030014536024350ø11Model Assorted FuseA B C D E a b øc HR18-160 NT0010518488160437325ø7HR18-250 NT11842681162306611550ø9HR18-400 ...