Technical Articles

What is UL 60947-802020?

UL 60947-8:2020 is a global standard for low-voltage switchgear and controlgear. It provides guidelines and requirements for the design, construction, and testing of these electrical devices. The standard was developed by Underwriters Laboratories (UL), an independent safety science company that sets standards for product safety and performance.

Key Requirements of UL 60947-8:2020

UL 60947-8:2020 specifies numerous technical requirements to ensure the safety and reliability of switchgear and controlgear. Some of the key requirements include:

Temperature rise limits: The standard defines maximum allowable temperature rise for different components to prevent overheating.

Short-circuit withstand strength: Switchgear and controlgear must be able to withstand high short-circuit currents without damage.

Clearances and creepage distances: It sets guidelines for minimum clearances and creepage distances to avoid electrical arcing and insulation breakdown.

Mechanical operation: Switching mechanisms should be durable and reliable, ensuring proper operation over their expected lifespan.

Dielectric properties: The standard defines tests and requirements to verify the dielectric strength and insulation properties of components and materials.

Benefits of Complying with UL 60947-8:2020

Adhering to UL 60947-8:2020 offers several advantages for manufacturers and end-users:

Enhanced safety: Compliance with the standard ensures that switchgear and controlgear meet stringent safety requirements, reducing the risk of electrical hazards.

Improved reliability: The standard's requirements ensure the quality and longevity of electrical devices, reducing the likelihood of failures and malfunctions.

Global acceptance: UL standards are internationally recognized, facilitating market access and acceptance for manufacturers in various regions.

Product differentiation: Compliant products carry the UL mark, which instills confidence in customers and sets them apart from competitors.


UL 60947-8:2020 plays a crucial role in ensuring the safety and performance of low-voltage switchgear and controlgear. Manufacturers should carefully adhere to its guidelines and requirements, ultimately promoting safer electrical systems in various industries. Compliance with this standard not only enhances product safety but also offers numerous benefits for manufacturers and end-users alike.



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