What is a UL CCN number?

UL-certified products are assigned a CCN (Category Control Number) according to the product category. A CCN, in principle, consists of four letters and a one-digit number.

Do UL listings expire?

There is no expiration to the UL Certification for a product bearing the UL Mark because the product complied with the requirements in effect at the time manufacture and the application of the Certification Mark.

What is UL verification?

UL Verification is an objective, science-based assessment that confirms the accuracy of marketing claims. Our independent marketing claim Verification process scrutinizes the validity of specific advertising or promotional statements, giving you a way to separate verified fact from fiction.

Is UL certified the same as UL listed?

UL certification is essentially an umbrella term in which UL listed and UL recognized fall. In contrast, UL listing can refer only to stand-alone products that have a specific function and were tested against UL’s nationally recognized safety standards of a specific category of equipment.

What does the C mean on a UL label?

The C-UL mark is applied to products for the Canadian market. The products with this type of mark have been evaluated to Canadian safety requirements, which may be somewhat different from U.S. safety requirements. The optional C-UL-US mark indicates compliance with both Canadian and U.S. requirements.

Is UL listed?

The UL Listed seal means that the product has been tested by UL to nationally recognized safety and sustainability standards. Additionally, it has been found to be free from a reasonably foreseeable risk of fire, electric shock in a Division 2 environment.

What is the difference between UL listed and UL approved?

While not always straightforward, the key takeaway is that “UL Listed” is meant for self-contained products such as external power adapters and “UL Recognized” is for components comprising a larger system like internal ac-dc power supplies.

Is UL listing mandatory?

Having a UL listed certified unit is not legally required. It is, however, a common practice because many large companies will only buy equipment that has passed the UL safety tests.