SYR-100A series round meter base 100Amps,120~240VAC, Single phase,4 terminal,2 or 3 wire,Fix ... hub size:1/2",3/4",1" SYR-100A Series Round meter ... Item Code No.No. of terminalscircuit of applicationapplicable meter form designationMeter class ratingFix hub sizestds packspacking sizeSYR- ... 1” 40 75X39X43CM•100Amps,120/240V AC,Single phase,4 terminals,2 or 3 wire Copper Jaw, ...