Contact us

Quick Guide to NRTL Marks on Your Electrical Products

The Nationally Recognized Testing Laboratory (NRTL) certification mark provides market access in the United States for your electrical products.

Ready to Begin the Process?

Contact us with questions or to receive a quote.

Quick Guide: NRTL Marks on Your Electrical Products

Note: The text shown below is the plain-text version of the infographic shown above.

Pro Tip #1: The Appearance of NRTL Certification Marks Varies by Organization1

All Nationally Recognized Testing Laboratories (NRTLs) have their own certification marks, each with a different design and color scheme. Any NRTL mark displayed on the OSHA website is acceptable for showing product certification within that organization’s particular scope.2

Get to Know the NRTL Electrical Safety Mark

There are three versions of NSF’s mark for certified electrical products. Letter designations next to the mark show acceptance in the United States, Canada or both.

Certified for the United States only.

Certified for Canada only.

Certified for Canada and the United States.

In 2022, these marks will transition to also display the specific standard(s) the product is certified to.

Pro Tip #2: The NRTL Mark on a Product Means One Thing and One Thing Only

It means the product has been certified and meets the relevant standard requirements. An Authority Having Jurisdiction (AHJ) looks for the NRTL mark and certification to the appropriate standard, not for certification by a particular Certification Body (CB). (But that doesn’t mean you shouldn’t look further.)

Consumers Know and Value the NRTL Mark3

  • 76% know what the mark means
  • 50% look for the mark when buying electrical product
  • 33% are more likely to buy a product with the mark

Pro Tip #3: Already a Customer? The NSF NRTL Mark Can Give You Even More

NSF can bundle services for customers already working with us on health effects and performance projects. Because we already have related product information on file, we can often streamline documentation and combine audits and costs.

Need Electrical Certification?

Visit our electrical certification page for more information on our services.
Learn More

Electrical Field Evaluations

Submit one-time use products to NSF for field evaluation and labeling.
Learn More





How NSF Can Help You

Get in touch to find out how we can help you and your business thrive.

What’s New with NSF