Scope and object This standard is applicable to ac contactors applied at voltages in the range of 1 501V to 15kV@ and metal-enclosed contactor-based controllers@ control centers@ and other control assemblies and associated equipment applied at voltages in the range of 751V to 15kV@ designed for operation at frequencies of 50 or 60 Hz on three-phase systems. These requirements cover equipment intended for use in ordinary (non-hazardous) locations and installed in accordance with the applicable local installation codes and standards (see Annex A@ Item 1). These requirements@ as modified by the applicable national standards for fire pump controllers@ also cover fire pump controllers (see Annex A@ Item 2). This standard also includes requirements for controllers intended for service entrance applications. (See 5.204 and Annex A@ Item 3.) This standard does not cover: a) equipment for use in classified (hazardous) locations as defined in the applicable installation codes or standards; b) components contained in contactors and contactor-based controllers for which individual component standards exist; and c) auxiliary low voltage control assemblies (see Annex A@ Item 4). This standard also includes requirements for reduced-voltage solid state controllers. It does not@ however@ cover equipment consisting solely of electronic or solid state devices@ circuits@ or systems@ nor does it cover electronic variable speed motor controllers (power conversion equipment). This standard does not cover full-voltage controllers using only solid state devices in the main circuit.