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