NEMA ICS 2.9-2002 Industrial Automation Control Products and Systems: Starters, Contactors, and Overload Relays Rated not more than 2000 Volts AC or 750 Volts DC - Part 9 AC Vacuum-Break Magnetic Controllers Rated 1500 Volts AC
National Electrical Manufacturers Association(NEMA)
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NEMA ICS 2.9-2002
NEMA ICS 2.9-2002 history
2002NEMA ICS 2.9-2002 Industrial Automation Control Products and Systems: Starters, Contactors, and Overload Relays Rated not more than 2000 Volts AC or 750 Volts DC - Part 9 AC Vacuum-Break Magnetic Controllers Rated 1500 Volts AC