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UL 1741 is a safety standard for inverters, converters, controllers, and interconnection system equipment for use with distributed energy resources (DERs). DERs are small-scale power generation and storage systems that are connected to the electrical grid. Examples of DERs include solar panels, wind turbines, and battery energy storage systems.

UL 1741 is designed to ensure that DER equipment is safe and reliable for use on the electric grid. The standard covers a wide range of topics, including:

  • Electrical safety
  • Performance testing
  • Environmental testing
  • Cybersecurity

UL 1741 is a voluntary standard, but it is widely adopted by manufacturers of DER equipment and by utility companies. Many utilities require that DER equipment be UL 1741 certified before it can be interconnected to the grid.

UL 1741 is important for a number of reasons. First, it helps to ensure the safety of DER equipment for installers, users, and the public. Second, it helps to ensure that DER equipment is reliable and will not disrupt the electric grid. Finally, it helps to promote the adoption of DER technology by providing a clear and consistent set of safety standards.

Here are some of the benefits of using UL 1741 certified DER equipment:

  • Safety: UL 1741 certified DER equipment has been tested to meet rigorous safety standards. This helps to protect installers, users, and the public from electrical hazards.
  • Reliability: UL 1741 certified DER equipment has also been tested to ensure that it will perform as expected. This helps to prevent disruptions to the electric grid.
  • Compliance: Many utilities require that DER equipment be UL 1741 certified before it can be interconnected to the grid. Using UL 1741 certified equipment helps to ensure compliance with utility requirements.
  • Peace of mind: Using UL 1741 certified DER equipment gives you peace of mind knowing that you are using safe and reliable equipment that is Fibox offers several UL 1741-compliant enclosures series; our most popular sized product families include:
    ARCA - JIC
    ARCA - IEC 
    For more information, contact your local Fibox representative.