Understanding UL60947-3:2020

The UL60947-3:2020 is an electrical standard set forth by Underwriters Laboratories (UL),

a global safety certification company. This technical article aims to provide an

in-depth understanding of the UL60947-3:2020 standard and its implications on various

electrical equipment. As the standard has several key elements, this article will focus

on three crucial aspects: scope, requirements, and compliance.

The Scope of UL60947-3:2020

The UL60947-3:2020 standard primarily deals with low-voltage switchgear and controlgear

assemblies. Its purpose is to ensure the safety of electrical equipment, such as circuit

breakers, contactors, and motor starters, used in industrial and commercial applications.

The standard sets out specific requirements for construction, performance, and testing,

all aimed at minimizing the risk of electric shock, fire, and other hazards.

Requirements of UL60947-3:2020

UL60947-3:2020 lays down stringent requirements for various aspects of electrical equipment.

This includes thermal withstand capability, short-circuit withstand capability, and dielectric

properties. The standard also addresses issues like protection against mechanical impact,

resistance to abnormal service conditions, and effective temperature rise limits. Compliance

with these requirements ensures that electrical equipment functions safely and reliably under

normal and abnormal operating conditions.

Compliance and Certification

To meet the standards set by UL60947-3:2020, manufacturers must undergo rigorous testing and

evaluation of their products. Compliance with UL60947-3:2020 ensures that electrical equipment

has been designed and built to specific safety requirements, reducing the risk of malfunctions

or accidents. Once the products pass the necessary tests, UL issues certification, indicating

the equipment's compliance with UL60947-3:2020. This certification is not only crucial for

meeting legal requirements but also instills trust among customers and end-users.