What is UL 60947-4-62020?

UL 60947-4-6:2020 is a widely recognized standard in the electrical industry that pertains to circuit-breakers and switches for use in photovoltaic (PV) systems. This technical article aims to provide a comprehensive understanding of the UL 60947-4-6:2020 standard, its significance, and its key requirements.

The Importance of UL 60947-4-6:2020

In the rapidly expanding field of renewable energy, particularly solar power, it is crucial to ensure the safety and performance of PV systems. UL 60947-4-6:2020 plays a pivotal role in achieving this objective by establishing rigorous guidelines and testing procedures for circuit-breakers and switches used in such systems.

Compliance with UL 60947-4-6:2020 ensures that PV system components, like circuit breakers and switches, meet stringent safety and performance requirements. It guarantees that these devices are reliable, durable, and capable of withstanding the unique challenges posed by photovoltaic installations.

Requirements of UL 60947-4-6:2020

UL 60947-4-6:2020 specifies various requirements that circuit-breakers and switches for PV systems must meet to gain certification. These include:

Clear markings and labeling: The standard mandates that all certified devices must be clearly marked with relevant information such as manufacturer details, voltage ratings, and current ratings.

Protection against overcurrent and short-circuits: Circuit-breakers and switches should provide effective protection against overcurrent and short-circuits, ensuring the safety of the PV system and connected equipment.

Resistance to environmental factors: Devices must demonstrate resistance to environmental factors such as temperature, humidity, and mechanical stress to operate reliably in various conditions.

Compliance with relevant standards: UL 60947-4-6:2020 requires that circuit-breakers and switches meet other applicable industry standards to ensure compatibility and interoperability.

Certification Process

To gain certification under UL 60947-4-6:2020, manufacturers must submit their products for testing by a recognized testing laboratory. The testing process typically involves rigorous evaluations of the devices' electrical performance, safety features, and compliance with the standard's requirements.

If a product meets all the necessary criteria, it receives the UL 60947-4-6:2020 certification, indicating its compliance with the highest safety and performance standards in the PV industry.

In conclusion, UL 60947-4-6:2020 serves as an essential benchmark for ensuring the safety and reliability of circuit-breakers and switches used in photovoltaic systems. Compliance with this standard not only protects users but also enhances the overall performance and longevity of PV installations.