Technological Innovation

What is UL 60947-4-6:2020?


The UL 60947-4-6:2020 is a standard that provides guidelines and safety requirements for low-voltage switchgear and control gear. It focuses specifically on the functionality and performance of motor starters, which are widely used in industrial and commercial applications.

Key Features

UL 60947-4-6:2020 defines various aspects related to motor starters, including their electrical and mechanical requirements, testing methods, and performance ratings. It covers motor starter devices such as direct-on-line starters, reversing starters, and star-delta starters.

One of the key features of UL 60947-4-6:2020 is its emphasis on thermal withstand capability. The standard ensures that motor starters can handle the heat generated during operation without compromising their functionality or posing safety risks. This requirement is crucial to prevent overheating, which can lead to equipment failures or even fire hazards.

Benefits and Applications

By complying with UL 60947-4-6:2020, manufacturers can ensure that their motor starters meet the necessary safety standards and are reliable for use in various applications. These applications include both industrial and commercial sectors, such as manufacturing plants, power distribution systems, HVAC systems in buildings, and more.

By adhering to the standard's guidelines, end-users can have confidence in the performance and safety of the motor starters they purchase. This not only protects valuable equipment but also reduces the risk of accidents, injuries, and downtime.


UL 60947-4-6:2020 plays a critical role in ensuring the safety and reliability of motor starters used in industrial and commercial settings. It sets the standard for their functionality, performance, and thermal withstand capability. By following this standard, manufacturers can produce high-quality motor starters that meet industry requirements, while end-users can benefit from enhanced safety and peace of mind.



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