Low-voltage distributor in accordance with EN 61439
- In accordance with NEN 61439
- Tested reliability
- Export-ready design
NEN 61439 low-voltage distributors for safe and reliable power distribution
A NEN-EN-IEC 61439 low-voltage distributor is indispensable for safe and efficient power distribution in industrial installations. This European standard defines how distributors should be designed, built and tested so that they meet stringent requirements for safety, reliability and durability. For engineers and buyers, this means that every distributor must be demonstrably validated with type verification and a routine test. Heat generation and short-circuit resistance also play an important role in design and delivery. Taking NEN 61439 into account from the initial design phase prevents projects from being delayed or installations from being rejected during inspections.
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What are NEN-EN-IEC 61439 low-voltage distributors
A NEN-EN-IEC 61439 low-voltage distributor is a distribution device for electrical power up to 1,000 volts AC voltage or 1,500 volts DC voltage. The standard describes how distributors should be designed, built and tested to ensure safe, reliable and durable operation. For engineers and purchasers, this means that every project must demonstrably comply with the specified requirements. This applies to the choice of components as well as to the documentation and testing procedures.
The introduction of NEN 61439 replaced the old NEN 60439 and puts much more emphasis on verification. Not only electrical performance is defined, but also mechanical robustness, heat management and short-circuit protection. This makes the standard an essential framework for modern panel construction.
Important standards and guidelines
Type of verification
One of the key points of NEN 61439 is type verification. This is the design verification: demonstrating that a distribution device theoretically complies with the standard. This can be done through calculations, reference tests or design documentation. Examples include heat calculations, strength of construction, short-circuit resistance and isolation distances. Type verification takes place at the design level and applies to the entire range of manifolds built according to that design.
Routine test
In addition to type verification, the standard also prescribes the routine test. This is the test performed on each individual distributor before it is delivered. During a routine test, electrical connections, continuity of protective circuits, insulation resistance and the operation of protection and switchgear are checked, among other things. The purpose is to ensure that each individual distributor is operating safely and correctly.
Short circuit resistance and heat calculation
Short-circuit resistance is a crucial aspect in NEN 61439. It determines whether a distributor can withstand the mechanical and thermal forces that occur during a short circuit. Calculations or tests are performed for this purpose. Heat generation is also important: when currents flow through components, temperature rise occurs. Heat calculations and ventilation provisions prevent components from overheating and shorten the life of the installation.
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Applications in industry
NEN 61439 low-voltage distributors are used in virtually every sector where large electrical installations are present. In infrastructure and water management, they provide reliable distribution of energy to pumps, valves and control systems. In the petrochemical and process industries, they are a critical link to distribute energy safely under harsh conditions. 61439 distributors are also used in mechanical engineering to power complex production lines.
Because the standard has international recognition, a distributor according to NEN 61439 is directly applicable not only in the Netherlands but throughout Europe. This also makes this standard interesting for companies exporting their installations.
Advantages of NEN 61439 low-voltage distributors
Working in accordance with NEN 61439 offers clear advantages for both users and clients.
- Safety: clear requirements for short-circuit resistance and insulation reduce the risk of malfunctions or dangerous situations.
- Reliability: A distributor that meets the standard demonstrably performs according to established criteria.
- Transparency: thanks to type verification and routine testing, it is clear which checks have been made and which performance is guaranteed.
- Inspection and approval: installations are more quickly accepted by inspection bodies because NEN 61439 is widely recognized.
- Sustainability: attention to thermal management and material selection extends the life of the installation.
The process from design to commissioning
A NEN 61439-compliant process starts with hardware engineering. In design tools such as EPLAN P8 or Pro Panel, schematics and cabinet construction are defined. Here the required current ratings, short-circuit powers and ventilation provisions are taken into account.
Next comes the construction phase. All components are assembled and wired according to the design specifications. During this phase, initial internal checks are also performed to ensure that the distributor meets the requirements.
Next comes the verification phase. The type verification is demonstrated by calculations and documentation, while routine testing is performed on the specific distributor. This includes insulation resistance measurements, functional tests and protection circuit checks.
Finally, delivery takes place with a Factory Acceptance Test (FAT) in the workshop and, if desired, a Site Acceptance Test (SAT) on site. This assures the client of a distributor that is fully compliant with NEN 61439 not only on paper but also in practice.
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With Gerbin Control as your partner, you benefit from several specific advantages. We strive for reduced Total Cost of Ownership (TCO) and offer electrical components that meet the highest standards. In addition, we combine flexibility with competitive pricing, increase the efficiency of your systems and machines, and have an international network and UL/CSA certification.
Gerbin Control as your partner for NEN 61439
Realizing a reliable and safe low-voltage distributor according to NEN 61439 requires specialist knowledge. The standard sets strict requirements for type verification, heat management, short-circuit resistance and the performance of routine tests. For many companies, it is a challenge to translate these requirements in practice into a design that not only complies on paper, but also guarantees safe and stable operation in operation.
Gerbin Control combines in-depth experience in panel building with a proven approach that is fully compliant with the requirements of NEN 61439. Our engineers work with EPLAN Pro Panel to validate and document designs. During the construction phase, we ensure that all components are correctly applied and that the distributors are tested for short-circuit resistance and heat generation. In addition, we perform both FAT and SAT testing to ensure that the operation of the installation is demonstrably compliant at every stage.
With Gerbin Control as your partner, you choose security, safety and quality. Whether in infrastructure, water management, petrochemicals or mechanical engineering, we supply low-voltage distributors that are ready for future use. Contact us for advice or a no-obligation discussion on how we can support your project.
Frequently asked questions about NEN 61439 low-voltage distributorsn
What does NEN 61439 type verification entail?
Type verification is the demonstration that a low-voltage distributor meets the requirements of the standard. This is done with calculations, references to existing tests or by testing. This includes assessment of heat development, short-circuit resistance and mechanical strength. The result is proof that the design as a whole complies with NEN 61439.
Why is a routine test required by NEN 61439?
The routine test is designed to verify that each individual panel is built correctly and functions safely. During this test, issues such as the continuity of protective circuits, insulation resistance and the operation of protective devices are checked. This ensures that each distributor, regardless of design, is fully compliant upon delivery.
How is short-circuit resistance determined according to NEN 61439?
Short-circuit resistance indicates whether a distributor can withstand the forces and temperature rise that occur during a short circuit. This is calculated or demonstrated with tests. The calculation considers the components used, the structure of the system and the maximum short-circuit currents that can occur in the installation.
What role does heat generation play in low-voltage distributors?
When transporting power, components develop heat. NEN 61439 prescribes that this heat development must be calculated and controlled. Correct ventilation, cooling and component selection prevent parts from overheating. This increases safety and extends the life of the installation.
What are the advantages of a NEN 61439-compliant distributor?
A distributor according to NEN 61439 offers several advantages: higher safety, guaranteed reliability, clear documentation and easier inspections. For clients, this means less chance of rejection during inspections and an installation that meets international standards. This saves time and prevents costly retrofitting.
