What is UL 60947-3:2020?

UL 60947-3:2020 is a professional technical standard that specifies the requirements for low-voltage switchgear and control gear products. It provides guidelines and regulations to ensure the safety, reliability, and performance of these electrical products. This standard was developed by Underwriters Laboratories (UL), a global safety consulting and certification company.

Scope and Application

The scope of UL 60947-3:2020 covers various aspects related to low-voltage switchgear and control gear products. It includes requirements for switching devices, motor starters, circuit-breakers, and other related equipment used in electrical installations. The standard also addresses environmental conditions, coordination with protective devices, and testing methods.

UL 60947-3:2020 applies to both new products as well as modifications and extensions of existing equipment. It ensures that manufacturers comply with specific technical criteria that guarantee the safe and efficient operation of their products.

Key Changes in UL 60947-3:2020

The latest version of UL 60947-3 was published in 2020 and includes several important changes. One significant modification is the updated temperature rise limits. The standard now sets stricter limits on the maximum temperature rise of switchgear and control gear equipment during normal operation.

Another notable change is the inclusion of new requirements for the resistance to heat and fire of insulating materials used in these products. The standard now mandates specific tests to evaluate the fire behavior of these materials, ensuring increased safety measures.

UL 60947-3:2020 also introduces revised mechanical durability testing procedures. Manufacturers are now required to perform additional tests to verify the reliability and longevity of their products under various operating conditions.

Compliance and Benefits

Compliance with UL 60947-3:2020 is crucial for manufacturers of low-voltage switchgear and control gear products as it demonstrates their commitment to meeting high safety standards. It ensures that their products are thoroughly tested, providing peace of mind to users who rely on the safe and efficient operation of such equipment.

Additionally, compliance with this standard can open up new opportunities for manufacturers to access global markets. Many countries and regions, including the United States, Europe, and Asia, have adopted UL 60947-3 as a mandatory requirement or as a recognized standard for electrical installations. By obtaining UL certification, manufacturers can broaden their customer base by demonstrating their products' compliance with international safety standards.

In conclusion, UL 60947-3:2020 plays a vital role in ensuring the safety and reliability of low-voltage switchgear and control gear products. Its comprehensive guidelines and requirements help manufacturers produce high-quality equipment that meets the needs of various electrical installations worldwide.