Historical
C22.2 NO. 253-09
Medium-voltage ac contactors, controllers, and control centres (Tri-national standard, with UL 347 and NMX-J-564/106-ANCE- 2009)
This is the harmonized ANCE, CSA, and UL Standard for medium-voltage ac contactors, controllers, and control centres. These requirements cover equipment intended for use in ordinary (non-hazardous) locations and installed in accordance with the applicable local installation codes and standards.
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CSA America, Inc. [csa]