What is UL 60947-3:2020?

UL 60947-3:2020 is an international standard that specifically addresses the safety requirements for low-voltage switchgear and control gear assemblies. This standard, published by Underwriters Laboratories (UL), provides guidelines for the construction, testing, and performance of such electrical equipment to ensure the safety of both users and operators.

Understanding the Scope

The standard UL 60947-3:2020 covers a broad range of low-voltage switchgear and control gear assemblies, including switchboards, control panels, motor starters, and other similar devices. It sets out the requirements for their design, installation, operation, and maintenance. By following the guidelines outlined in this standard, manufacturers can ensure that their products meet internationally recognized safety standards.

Key Changes in UL 60947-3:2020

The latest revision of UL 60947-3, published in 2020, introduces several significant changes to the previous edition. These changes aim to enhance the safety aspects and align with advancements in technology. Some of the key changes include:

Inclusion of new product types and categories to cover a wider range of devices

Introduction of tighter requirements for circuit-breakers and disconnectors

Enhanced provisions for devices used in photovoltaic applications

Updated marking requirements to provide clearer information to users

Improvements in temperature rise limits for certain components

Compliance and Benefits

Complying with UL 60947-3:2020 brings several benefits to manufacturers, end-users, and regulators alike. For manufacturers, adhering to the standard ensures that their products meet recognized safety requirements, enhancing the quality and reliability of their offerings. End-users can have peace of mind knowing that the electrical equipment they are using has undergone rigorous testing to ensure its safety. Regulators can rely on UL 60947-3:2020 as a benchmark when evaluating the conformity of products in the market.

In conclusion, UL 60947-3:2020 is a crucial international standard for low-voltage switchgear and control gear assemblies. Its implementation helps to safeguard both users and operators by providing comprehensive guidelines for the construction, testing, and performance of electrical equipment. Manufacturers, end-users, and regulators can all benefit from complying with this standard, ensuring the continued safety and reliability of low-voltage electrical devices.