THC 121A Enclosed Switches
CHAIR
Mr. Arthur Jur
Eaton
3990 Old Tasso Rd
Cleveland, TN 37312
USA
Phone: (864)-344-8565
Fax: None
Email: artjjur@eaton.com
SECRETARY
Mr. Zijun Tong
NEMA
1300 N. 17th Street
Suite 900
Rosslyn VA 22209
USA
Phone: (703) 841-3253
Fax: (703) 841-3353
Email: zijun.tong@nema.org
SCOPE
To develop a tri-national standard for the switch product sector for use in Canada,
Mexico and the U.S. After publication of the trinational standard, it will then be
harmonized to the maximum extent possible with IEC standards and consistent with the safe
installation of switches in accordance with national electrical codes.
STANDARDS
Enclosed Switches (C22.2 No. 4, UL 98, NMX-J-162-ANCE)
PROJECTS
Publication Schedule

Supporting Company and Association Members