The development of LED technology has prompted UL to develop more corresponding certification schemes. On January 25, 2016, UL announced launch the "Class P LED Driver Program". Class P LED drivers that have passed the UL certification will be listed as UL certified products.

Due to circuit design or protective components, the constant voltage led driver of this category can make the installed lighting products have the function of overheating protection, thereby eliminating the hazards of fire or electric shock . It can be interchanged with other Class P LED drivers without considering the temperature of the designated location (Tc) and under limited conditions, no need to submit an application for re-certification of lighting products, reducing the evaluation items and certification process.

This can avoid the trouble caused by a single led electrical power supply manufacturer's suspension of supply and help maintain the stability of the supply chain. At the same time, the Class P certification program can also provide end users with a variety of voltages, dimming and other functional application designs without incurring certification costs.
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