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UL 508A

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UL 508A Industrial Control Panels

standard by Underwriters Laboratories, 04/24/2018

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$358.80

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$897.00

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

This New Edition of UL 508A 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

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Edition: 3 Published: 04/24/2018