What is UL 60947-2:2020?

UL 60947-2:2020 is a technical standard developed by Underwriters Laboratories (UL), an independent global safety science company, that sets the requirements for low-voltage switchgear and controlgear assemblies. It specifies the construction, performance, and testing criteria for electrical equipment intended for use up to 1000 volts AC or 1500 volts DC.

Construction Requirements

The construction requirements outlined in UL 60947-2:2020 ensure that switchgear and controlgear assemblies are built to withstand mechanical stress, heat, and fire hazards, while providing reliable and safe operation. The standard specifies the design and materials used for enclosures, circuit breakers, contactors, and other components to ensure proper insulation, protection against electric shock, and adequate cooling.

Performance and Testing Criteria

To meet UL 60947-2:2020, switchgear and controlgear assemblies must undergo rigorous performance and testing procedures. This includes temperature rise tests, short-circuit strength tests, dielectric tests, and endurance tests. These tests assess the equipment's ability to handle various operating conditions, such as overload situations and fault currents, without compromising safety or performance.

Benefits and Compliance

Complying with UL 60947-2:2020 provides several benefits for manufacturers, suppliers, and end-users. Firstly, it ensures the highest level of safety for personnel working with or near electrical equipment. Secondly, it helps to minimize the risk of electrical fires and accidents by ensuring that the equipment is designed and tested to withstand potential hazards. Thirdly, compliance with this standard allows manufacturers to demonstrate the quality and reliability of their products, which can enhance customer confidence and marketability.

Overall, UL 60947-2:2020 plays a crucial role in promoting electrical equipment safety and reliability. By adhering to its construction, performance, and testing requirements, manufacturers can offer products that meet the highest standards of quality, ultimately benefiting both the industry and end-users.