UL (Underwriters Laboratories) - Marking
The each an every electrically controlled devices or systems in the USA must be approved. Conformity with national safety regulations is demonstrated by a mark of conformity from a qualified, recognised testing laboratory. The most widely recognised testing laboratory is UL (Underwriters Laboratories). UL conducts tests according to UL standards, which incorporate national standards as an essential component.
The purpose of these tests is to minimise the risk posed by insurance companies' liabilities resulting from equipment and the hazards associated with it (electric shock, fire and mechanical injury). The damages awarded by courts in the USA can easily reach levels high enough to threaten the continued existence of manufacturers, sellers and users (companies).
Conformity to national safety requirements can be verified by "listing" or "labelling" i.e it means that the appropriate test has been carried out and the same a piece of equipment or system conforms to the relevant safety regulations or is suitable for a specific purpose. There are several types of UL Marks. Each has its own specific meaning and significance. The UL Marks may be only used on or in connection with products certified by UL and under the terms of written agreement with UL.
It can be used on component parts that are part of a larger product or system. This certification Mark is more widely accepted throughout the U S and Canada by consumers, regulatory authorities and the insurance industry.
UL Listing Mark
It stands for tested and evaluated representative samples of the complete product to recognised US safety standards.
UL Classification Mark
The Products carrying the UL Classification Mark have been estimated for specific properties, a limited range of hazards, or suitability for use under limited or special conditions. This certification Mark is more widely accepted throughout the U S and Canada by consumers, regulatory authorities and the insurance industry.
C-UL Listing Mark
The products with this type of mark have been evaluated to Canadian safety requirements. You will see this type of mark on appliances and computer equipment, vending machines, household burglar alarm systems, lighting fixtures and many other types of products.
CCC This mark is mandatory The CCC Mark is a safety and quality mark for products sold in the Chinese market. It is required for products in 19 groups, divided into totally 132 product categories.