UL 508A Industrial Electrical Panels

What are industrial electrical control panels?

The National Electrical Code (NEC) Section 409.2 defines industrial control panels as an assembly of two or more control or power circuit components, or a combination of both. These components are usually transformers, contactors, switches, terminal blocks, motor drives, and overcurrent protective devices.

Like most industrial equipment, electrical panels can either be open type or enclosed.  

Open-type commercial electrical panels are installed in an enclosure before use while enclosed panels can be rated for indoor applications or any type rating. Enclosed variations can also be certified for use in classified points, including hazardous areas.

The advantages of UL listed-electrical panels 

Commercial electrical panels that are UL-listed are certified by both the National Electric Code (NEC) and the Canadian Electric Code (CEC). 

UL is the global leader in ICP certification and has close relationships with AHJs (Authorities Having Jurisdiction). Essentially, the UL Mark proves that the panel has met North American safety standards and simplifies compliance with AHJs.

A UL-listed panel is one that meets environmental ratings, has the necessary safety markings, and has motor and wiring protection.

Relying on a control panel shop without a UL 508A certification can lead to unsafe equipment and working conditions. The lack of UL safety marks on your panels can increase the risk of costly failures and shutdowns.

JHFoster is a leading distributor of electrical equipment designed for a wide range of applications and industries. Browse our high-quality actuators, gearboxes, and safety solutions today.

Other Recommended Products and Solutions

Access the links below to learn about our range of products that support a variety of industrial applications. We offer everything from electric actuators and servo reducers to entire safety solutions for your project.

To view our selection of products, visit our online store.

Literature Library

Looking for additional information? Check out JHFoster’s Automation Library.

We supply Electrical Control Panel product knowledge in these areas:

  • PLC
  • HMI 
  • Radio & telemetry
  • Servo/stepper drives 
  • Electric actuators 
  • Network communication devices
  • Variable Frequency Drives (VFD) 
  • Pressure transmitters 
  • Electronic proportional air regulators 
  • Encoders 
  • Sensors 
  • Temperature controllers 
  • Safety components

What Will a Panel Do for Your Business?

Electrical control panels do exactly what they sound like. They control mechanical processes electrically. These panels help you change from inefficient processes to more efficient ones to save you money. Control panels simplify production, ensure quality materials and accurate machining. Even more, control panels increase production, ensure safety, and improve efficiency and reliability. They can even keep existing equipment operating with reduced breakdowns. 

In What Industries Can Panels Improve Safety?

Nearly every industry can benefit from electrical control panels. However, the most common industry control panels are used in is manufacturing. Here are a few common applications where electrical control panels have been known to keep people safe:

  • Filling
  • Food
  • Material handling
  • Product testing
  • Compressor controls
  • Pneumatic circuit controls
  • Motor controls
  • Relay panels
  • Timeclock/timer based control

Additional Resources

Download our PDF to learn more about our Panel shop and what we can design for you.

Check out our Podcast on Electric Control Panels.

Read our Case Study that shares challenges and solutions.

For more information on Electronic Controls, contact us to discuss your electrical control panel needs, or set up an appointment to visit our UL 508A control panel shop in Eagan, Minnesota.

John Henry Foster distributes these products shown as well as evaluates, designs, engineers, integrates and services the entire system.


Motion & Mechatronics

  • Rotary/Linear Motion
  • Sizing/Consultation
  • Motors/Drives/Control
  • Robots
  • Conveyors

Sensors & ID

  • Presence
  • Inductive/Capacitive
  • RFID/Bar Code
  • Safety


  1. Networks (LAN/WAN)
  2. HMI/Web Panel
  3. Remote Access/Monitor


  • Horizontal Millin – 5 axis
  • Vertical Milling = 5 axis
  • Turning (up to 14″)
  • Swiss Turning (approximately 3 – 20 mm)
  • CAD Solidworks
  • Gibbs & Surfcam


  • UL508A Certified Panel Shop
  • Control Panel Build
  • Enclosures
  • Value Added Sub Assemblies: Pneumatic, Mechanical, Electrical, Build to Print
  • Horizontal Millin – 5 axis
  • Vertical Milling = 5 axis
  • Turning (up to 14″)
  • Swiss Turning (approvximately 3 – 20 mm)
  • CAD Solidworks
  • Gibbs & Surfcam

Frequently asked questions

We help with the entire design and manufacturing process. From assisting with project layout and selection of components to building the panel with UL 508A & NEC specifications in mind. We also provide wiring installation assistance and onsite startup and training.

We have a highly trained team of control engineers with many years of combined experience in hardware, software, and design/build projects.

We create an average of 60 electronic control panels monthly and work closely with our clients from start to finish. Our engineers can help with both high and low custom volume requirements.

Request More Information

Contact us today at 855.688.0065 or email us and one of our certified technicians can walk you through which electrical control panel is right for your specific application.
Need more information about products and suppliers? Get literature from a JHFoster representative today.