What is BS EN 61439-3:2018?

Technical Article

BS EN 61439-3:2018 is a standardized regulation that specifically pertains to low-voltage switchgear and controlgear assemblies. Issued by the British Standards Institution (BSI), it provides manufacturers, designers, and installers with guidelines to ensure the safety, quality, and performance of such electrical components.

The Purpose of BS EN 61439-3:2018

With the development of technology and increasing complexity of electrical installations, there was a growing need for consistent standards that would guarantee the reliability and safety of switchgear and controlgear assemblies. BS EN 61439-3:2018 serves as a framework to assess compliance, ensuring that these assemblies meet specific requirements.

This standard aims to prevent hazards caused by electrical faults including overloads, short circuits, and mechanical failures. It provides detailed instructions on matters such as temperature rise limits, clearances, creepage distances, protection against electric shock, and resistance to fire.

Main Requirements and Changes in BS EN 61439-3:2018

BS EN 61439-3:2018 introduces several changes compared to the previous version. One notable update is the use of clear type-tested assemblies (TTAs) and partially type-tested assemblies (PTTAs). TTAs are fully tested for design verification, while PTTAs refer to assemblies where individual components have been tested but not the combination as a whole.

The new standard also emphasizes the importance of documentation and marking for switchgear and controlgear assemblies, ensuring that all relevant information is provided to users, installers, and maintenance personnel. This can include details such as rated operational voltage, short-circuit rating, and type of protection provided.

Implications and Benefits

BS EN 61439-3:2018 has significant implications for manufacturers, designers, and installers. Adhering to this standard ensures that electrical installations are compliant, minimizing the risk of malfunctions, injuries, or damage to property. Additionally, it allows for better interoperability between different manufacturers' components, facilitating the integration of various systems into a cohesive unit.

The benefits of complying with BS EN 61439-3:2018 extend beyond safety and conformity. By following standardized practices, manufacturers can improve efficiency, reduce costs, and enhance the overall quality of their products. Consumers also benefit from increased confidence in the reliability and performance of switchgear and controlgear assemblies.

In conclusion, BS EN 61439-3:2018 plays a vital role in ensuring the safety and reliability of low-voltage switchgear and controlgear assemblies. By providing clear guidelines and requirements, it greatly contributes to the overall quality and performance of electrical installations. Manufacturers, designers, and installers should be aware of these regulations and strive to maintain compliance to safeguard both end-users and their own reputations.