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
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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