Standard 508A, Edition 3
UL 508A

Industrial Control Panels

UL Standard Edition 3 Published Date: April 24, 2018 Last Revision: July 28, 2022 ANSI Approved: July 21, 2022


Revisions and Related Documents

Red Line Std. (13)

July 28, 2022 Redline Revision
July 21, 2022 Redline Revision
August 05, 2021 Redline Revision
July 13, 2021 Redline Revision
August 06, 2020 Redline Revision
April 16, 2020 Redline Revision
July 03, 2018 Revision
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Proposals (19)

CSDS Proposal   

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

  • A revision of a single or multiple requirement(s).
  • A complete new edition of an existing Standard or Outline.
  • A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.


July 19, 2023
June 17, 2022
February 11, 2022
July 16, 2021
June 11, 2021
April 23, 2021
February 26, 2021
February 12, 2021
February 05, 2021
January 08, 2021
July 10, 2020
June 05, 2020
April 10, 2020
February 21, 2020
February 14, 2020
January 22, 2020
January 10, 2020
July 13, 2018
May 18, 2018
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Other Updates (2)

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These bulletins are not used in CSDS. These are announcement and report type bulletins.

Summary of Topics (SOT)
October 18, 2018 View
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Technical Guidance   
August 13, 2018
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Referenced Standards (0)

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Reverse Referenced Standards (22)

UL 508A is referenced in the following list of UL Standards

218 3 Fire Pump Controllers
295 2 Commercial-Industrial Gas Burners
331C 2 Outline of Investigation for Fuel Filtration Units
347A 2 Medium Voltage Power Conversion Equipment
407 8 ANSI/CAN/UL/ULC Manifolds for Compressed Gases
407 8 Manifolds for Compressed Gases
515A 3 Outline of Investigation for Electrical Resistance Trace Heating and Associated Controls for Use in Sprinkler and Standpipe Systems
698A 4 Industrial Control Panels Relating to Hazardous (Classified) Locations
726 7 Oil-Fired Boiler Assemblies
810 6 Capacitors
834 5 Standard for Heating, Water Supply, and Power Boilers - Electric
924 10 Emergency Lighting and Power Equipment
1389 1 Plant Oil Extraction Equipment for Installation and Use in Ordinary (Unclassified) Locations and Hazardous (Classified) Locations
1389 1 Plant Oil Extraction Equipment for Installation and Use in Ordinary (Unclassified) Locations and Hazardous (Classified) Locations
1453 6 Electric Booster and Commercial Storage Tank Water Heaters
2416 1 Audio/Video, Information and Communication Technology Equipment Cabinet, Enclosure and Rack Systems
2565 1 Standard for Industrial Metalworking and Woodworking Machine Tools
3202 1 Outline of Investigation for Mobile Electric Vehicle Charging Systems Integrated with Energy Storage Systems
6141 1 Wind Turbines Permitting Entry of Personnel
9540 3 Energy Storage Systems and Equipment
9691 1 Recommended Practice for Nameplates for Use in Electrical Installations
62091 1 Low-Voltage Switchgear and Controlgear - Controllers for Drivers of Stationary Fire Pumps
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