UL 508A Standard for Industrial Control Panels Overview

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We here at High Tech Design Safety are an evaluation, test and certification laboratory for equipment and products. Today our CEO, Steve Barcik Amstel shares about UL 508A.


Link to video also available here: https://youtu.be/766VBH8jibg

UL 508A is important to you if you are designing industrial equipment, industrial machinery, processing equipment and similar equipment. That industrial equipment and control panels are by law covered under the requirements of the National Electric Code (NEC NFPA 70) and must be suitable for use. UL 508A is the standard for suitability for use of industrial control panels.

Using UL 508A in your design, design reviews and product safety reviews will make things easier since it will allow you to know that you’ll meet conformity at the time of installation.

In order to have the installation of the equipment at your customers site go easy and the electrical inspection that may follow on go easy and be complete, you will need to be sure that you comply with UL 508A and potentially have either a third party laboratory label or a field labeling label on that piece of equipment.

UL 508A encompasses a broad range of requirements for industrial control panels, primarily the electrical requirements around those control panels…how they are operated and installed.

This is the overview of UL 508A and in future training videos, we will go through section by section of UL508A to give you information that will allow you to design products easily to meet this standard.

The scope of UL 508a includes all control panels including enclosed control panels and control panels with environmental control devices. UL 50 AA also has sections that deal with control circuits, field wiring, internal wiring, over-current protection, switching devices and miscellaneous devices including pneumatic switching devices. The requirements of 5088 also deal with marine use, air conditioning, refrigeration equipment and other specialized equipment including clean energy, large-scale medical equipment, large-scale equipment for medical labs and bio labs, and large-scale equipment for clean energy battery charging and other uses. UL 5088 panels are used throughout industries, including semiconductor manufacturing, measurement and metrology equipment, solar power generation equipment, heating and cooling equipment, furnaces, large-scale IT equipment and controls for IT, centers, data centers, large-scale computer centers, semiconductor manufacturing processes and process equipment, oilfield downstream and upstream processing equipment.

UL508A will apply to industrial equipment including; semiconductor manufacturing equipment including equipment tested and or certified under SEMI S2, equipment for large 3D printers including printers used for large-format, or printing buildings or homes, for solar power equipment, for electrical charging stations, or wind turbine equipment for oil and gas equipment, clean energy equipment for bioreactors, for greenhouses and grow houses, for the production of cement, for the production of plastics, for recycling centers for industrial equipment for recycling.

UL 508 a also applies to public transportation centers, personal drone charging and recharging centers, and cloud computing centers.

UL 508A and UL 508 will apply wherever there is an industrial control panel included, water and wastewater recycling systems, chemical recycling, large systems for producing solar panel equipment solar cell manufacturing, control panels for material handling control panels for megawatt battery storage, control panels for water and wastewater, control panels for composites and wind turbine manufacturing.

Please be sure to like and subscribe to get notifications of the next videos in this training. And if you have questions about getting your product to market please get into touch with us here at High Tech Design Safety. https://hightechdesignsafety.com/


Ul 508A has a long list of related standards; For example, how and when to use various UL Breaker types and also how to manage power inlets, cords, or conduit, and wire sizes.  Also critical are the enclosure types and locations of use.

Attachment Plugs and Receptacles – UL 498

Audible Signal Appliances – UL 464

Batteries, Lithium – UL 1642

Batteries, Standby – UL 1989

Capacitors and Suppressors for Radio- and Television-Type Appliances – UL 1414

Circuit Breakers, Molded-Case, Molded-Case Switches, and Circuit-Breaker Enclosures – UL 489

Class 2 Power Units – UL 1310

Dry-Type General Purpose and Power Transformers – UL 1561

Electric Fans – UL 507

Electric Heating Appliances – UL 499

Electric Motors – UL 1004

Electrically Isolated Semiconductor Devices – UL 1557

Electrically Operated Valves – UL 429

Electromagnetic Interference Filters – UL 1283

Enclosures for Electrical Equipment – UL 50

Conduit, Tubing, and Cable Fittings – UL 514B

Flexible Cords and Cables – UL 62

Ground-Fault Circuit-Interrupters – UL 943

Grounding and Bonding Equipment – UL 467

Industrial Control Equipment – UL 508

Information Technology Equipment – UL 1950

Low-Voltage Fuses – Part 11: Plug Fuses – UL 248-11

Low-Voltage Fuses – Part 12: Class R Fuses – UL 248-12

Low-Voltage Fuses – Part 13: Semiconductor Fuses – UL 248-13

Low-Voltage Fuses – Part 14: Supplemental Fuses – UL 248-14

Low-Voltage Fuses – Part 15: Class T Fuses – UL 248-15

Low-Voltage Fuses – Part 16: Test Limiters – UL 248-16

Luminaires – UL 1598

Motor Control Centers – UL 845

Overheating Protection for Motors – UL 2111

Plastic Materials for Parts in Devices and Appliances, Tests for Flammability of – UL 94

Polymeric Materials – Use in Electrical Equipment Evaluations – UL 746C

Power Conversion Equipment – UL 508C

Power Units Other Than Class 2 – UL 1012

Protectors, Supplementary, for Use in Electrical Equipment – UL 1077

Room Air Conditioners – UL 484

Surge Protective Devices – UL 1449

Switches, Clock-Operated – UL 917

Switches, Enclosed and Dead-Front – UL 98

Switches, Special-Use – UL 1054

Temperature-Indicating and -Regulating Equipment – UL 873

Time-Indicating and -Recording Appliances – UL 863

Transformers, Class 2 and Class 3 – UL 1585

Transformers, Specialty – UL 506

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