Functional safety standards define safety levels as safety integrity level (SIL), automotive safety integrity level (ASIL), performance level (PL) or class.
The required marking elements also include the aforementioned safety level declared by a product manufacturer.
UL’s Marks for functional safety certification indicate that a product provides functions to a user that can be applied in a safety-related way.
These are Marks consumers rarely see because they are specifically used on component parts that are part of a larger product or system.
These components may have restrictions on their performance or may be incomplete in construction.
If a product carries one of these marks, it means UL found that representative product samples met UL’s requirements.
These marks are seen commonly on appliances and computer equipment, furnaces and heaters, fuses, electrical panel boards, smoke and carbon monoxide alarms, fire extinguishers and sprinkler systems, personal flotation devices, bullet resistant glass, and thousands of other products. These marks appear on end products and complete components suitable for factory and field installation.
Guidelines addressing the suitability of a component when used in an end product are noted in UL’s test report as conditions of acceptability.
This information can also be found in UL’s Online Certifications Directory and the UL i QTM parametric databases.
Additional elements and markings may be present for products that comply with UL’s certification service and factory inspection requirements for Europe.
Please read more for information about UL’s combined mark for Europe, Canada and the United States.