UL 508A is the standard for the construction of Industrial Control Panels (ICPs). It provides guidelines on a variety of safety issues, such as component selection, calculation of short circuit ratings and proper wiring methods. The standard covers industrial control panel assemblies that may contain motor controllers, overload relays, fused disconnects, circuit breakers, buttons, switches, timerstimers, and controllers. The standard also specifies different requirements for different panels of machines and applications, such as industrial machinery, crane control, service equipment use, flame control, marine use, air conditioning and refrigeration and elevator control. The standard was first published in April 2001 and revised in September 2005 and April 2018. Manufacturers that adhere to the requirements are eligible for UL 508A Listing of their products.

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