FOREWORDThis standards publication was prepared by a technical committee of the NEMA Industrial Control and Systems Section. It was approved in accordance with the bylaws of NEMA and supersedes the indicated NEMA Standards.Replacement:Part 10 supersedes ICS 9 Part 1Part 11 supersedes ICS 9 Part 2This standards publication provides practical information concerning ratings@ construction@ test@ performance@ and manufacture of industrial control equipment. These standards are used by the electrical industry to provide guidelines for the manufacture and proper application of reliable products and equipment and to promote the benefits of repetitive manufacturing and widespread product availability.?