2000NEMA ICS 2-2000 Industrial Control and Systems Controllers, Contactors and Overload Relays Rated 600 Volts (Incorporates Errata: March 2008)
1993NEMA ICS 2-1993 Industrial Control and Systems Controllers@ Contactors@ and Overload Relays Rated Not More Than 2000 Volts AC or 750 Volts DC
1988NEMA ICS 2-1988 Standard for Industrial Control Devices@ Controllers and Assemblies
1983NEMA ICS 2-1983 Standard for Industrial Control Devices@ Controllers and Assemblies (Includes Revision 1: January 1984@ Revision 2: June 1985@ Revision 3: May 1986@ and Revision 4: January 1987)
1978NEMA ICS 2-1978 Standard for Industrial Control Devices@ Controllers and Assemblies