UL 347-20 Medium-voltage AC contactors, controllers, and control centers
Publication Year
2020
Document Status
Current
Abstract
Specifies 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.
Document History
Revised September 30, 2022.
Publisher Information
Underwriters Laboratories
Established in 1894 as the Underwriters' Electrical Bureau, UL is a global safety consulting and certification company, approved to perform safety testing by the U.S. federal agency of Occupational Safety and Health Administration.
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