Labeling Requirements

Industrial control panels rated not more than 600 volts
Industrial control panels rated not more than 600 volts and for installation in ordinary locations are specified in the Standard for Industrial Control Panels, UL 508A. The requirements in the Outline are based on the Standard for Industrial Control Equipment, UL 508, the National Electrical Code, NFPA 70, and the Standard for Industrial Machinery, NFPA 79.
 

Industrial control panels rated more than 600 volts
Panels operating from a source of supply greater than 600 volts will be required to comply with UL 508, Standard for Industrial Control Equipment (up to 1500V) or UL 347, Standard for High Voltage Industrial Control Equipment (2.2-7.2 kV).

Industrial control panels intended for hazardous location installation
Panels intended for installation in a hazardous location or having circuits that will extend into a hazardous location are required to comply with different requirements. Please see the hazardous locations section at the UL website for more information.

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