UL 508A - Standard for Industrial Control Panels: 2018 [paper]

UL 508A – Standard for Industrial Control Panels, 3rd Edition

Please note: All interim revisions for this edition available at time of your purchase will be included.

This New Edition includes the following changes in requirements:

• Interlocking means to prevent restoring power
• Marking of Overload Setting
• SB4.3.1 correction
• Redefining the definition of Low Voltage
• Cable Assemblies and Fittings for Power and Control Circuits
• SB4.2.3 Exception No. 4 – Substituting for a Non-Current Limiting Overcurrent Device
• Add 6P as an additional device that may be used to close an opening in a Type 4X enclosure in UL 508A, Table 19.2

UL508, UL508A, UL Standard 508