IEC vs EN Standards: A Guide For IT Professionals
IEC connector standards are from the International Electrotechnical Commission (IEC), a body that creates the global technical standards that most electrical systems are built on.
These are wide and affect pretty much all electrical systems, but the standards that focus on connectors are the IEC 60320. They are responsible for the C13/C14 and C19/C20 couplers we often work with in server and PDU Connections.
For IT professionals, IEC connector standards are like a universal language, and they ensure that all your connections across regions are similar and secure. For example, if itâs a C19/C20 coupler with IEC 60320 compliance, you know that itâs rated for a maximum of 16 A at 250 V AC, with a max pin temperature of 70°C.
EN connector standards
EN stands for European Norm and, in connectors, it refers to the European version of the IEC standard, indicated as EN IEC 60320-1 or EN/IEC 60320-1.
The reason for the marking method is that the EN standard uses the IEC standard as the base. Itâs like two versions of the same movie, but with the second one having a few extra scenes.
If itâs EN IEC 60320-1, it builds on the IEC 60320-1, but adds a few extra requirements that affect the performance. In most cases, the extra requirements are higher ratings meant to make products safer for the EU.
For example, to comply with EN standards, a connector undergoes temperature rise testing that's more rigorous than in IEC testing. This means the product needs to handle temperature much better than the IEC demands.
The same also applies to mechanical durability. An EN-compliant connector will need to survive more connection/disconnection cycles and remain stable when pulled with higher forces.
So, when you see EN as a prefix to an IEC standard, it often means that the ratings are higher and the product is more durable.
How the two standards work together
As you can already deduce, these two arenât competitors. EN standards essentially raise the minimum requirements, so they improve the quality of products. This means that most high-quality connectors are designed to meet both standards, especially if they ship worldwide.
However, in some cases, manufacturers are forced to create different products when the EN requirements call for a different design. For example, if EN specifies particular insulation materials that offer better performance but arenât required by IEC standards, the manufacturer will likely make EU-only products.
Why the two standards are important for IT professionals
Procurement and compatibility
When you are sourcing products, itâs important to consider certifications to avoid nasty surprises. This is especially important if you purchase equipment from different manufacturers, as they may abide by different standards. Even the same manufacturer may have different products for different markets, so ensure you check whether your connectors have an EN specification. Quite simply, âmeets international standardsâ isnât enough.
Safety & liability
The standards required in your region also define your responsibility. If you are in the EEA and your non-EN compliant connector fails and causes downtime or even a fire, insurers and regulators will lay that liability on your procurement decisions.
Even if the connector meets IEC standards, that wonât be enough as the EN demands higher ratings.
Regional compliance
The EU is quite strict in compliance, so all your teams in the region should treat EN compliance as the minimum standard. Although it may not be indicated on the product, ensure you check the technical documentation to verify all the standards that a product meets.
Additionally, check the CE marking, as it indicates that a product meets essential safety and health requirements. You can make things easier by building this into your procurement and design processes from the beginning. It will help ensure smoother procurement, safer deployments and compliance with regional and international standards.
