The type current transformer,the class is 0.5,1.0 and 3.0,the work range is 30/5A-60/5A,it will be used with panel meter togethe MR CURRENT TRANSFORMERS TypeSpecificationID(mm)OD(mm)TD(mm)MR-2830/5A-60/5A287040MR-42100/5A-250/5A428030MR-45300/5A458030MR-60400/5A6010030MR-60400/5A 600/5A6010030MR-85800/5A-1600/5A8512020MR-1252000/5A-5000/5A12516520 High precision MR-28 CURRENT TRANSFORMERS