Switchgear construction according to DIN EN 61439: Standard-compliant implementation and current developments

Switchgear construction is a central element of industrial automation and power distribution. With the introduction of the DIN EN 61439 series of standards, the requirements for low-voltage switchgear assemblies were redefined to ensure safety, functionality, and availability. At the same time, modern trends such as digitalization and modular designs are driving the industry forward.

What does DIN EN 61439 regulate?

DIN EN 61439 replaces the previous DIN EN 60439 and sets comprehensive requirements for the construction of low-voltage switchgear assemblies. The standard consists of a basic standard (DIN EN 61439-1) and several product-specific parts that are applied depending on the application.

Essential aspects of the standard include:

• Safety: Ensuring voltage and short-circuit withstand capability, protection against electric shock, as well as resistance to heat and fire.
• Function: Ensuring operational capability and functional stability under various environmental conditions.
• Availability: Specifications for maintenance, replacement of components, and expansion of existing systems.

A central quote from the standard reads:

"The DIN EN 61439 series of standards applies to low-voltage switchgear assemblies (LV switchgear), whose rated voltage does not exceed 1,000 V (for alternating current) or 1,500 V (for direct current)." elektrofachkraft.de+1elektrofachkraft.de+1

New terminology and responsibilities

The standard introduces clear definitions for the parties involved in construction:

• Original manufacturer: Develops the switchgear assembly and provides type verification through testing, calculation, or design rules.
• Manufacturer of the switchgear assembly: Responsible for solution design, rating, labeling, and documentation of the system as well as carrying out the parts verification.

This clear division of responsibilities is intended to increase the quality and safety of switchgear.

Modern Trends in Control Cabinet Construction

In addition to compliance with normative requirements, the following developments shape modern control cabinet construction:

1. Digitalization and Automation

The use of digital tools and automated processes is gaining importance. Software solutions enable virtual planning and simulation of switchgear, which increases efficiency and reduces errors.

2. Modular designs

Modular systems allow flexible adaptation and expansion of switchgear. This facilitates maintenance and reduces downtime during modifications or expansions.

3. Integration of energy management systems

The integration of energy management systems in switchgear enables better monitoring and optimization of energy consumption, offering both ecological and economic benefits.

Practical tips for implementation

• Early planning: Consider the requirements of DIN EN 61439 already in the planning phase to avoid later adjustments.
• Documentation: Carry out comprehensive documentation of all steps, including type and quantity proofs.
• Training: Ensure that all involved employees are informed about the current standards and technologies.
• Quality control: Implement regular inspections and tests to ensure compliance with the standards.

Conclusion

The DIN EN 61439 sets clear requirements for control cabinet construction to ensure safety and functionality. At the same time, modern trends such as digitization and modular designs offer new opportunities for increased efficiency and flexibility. A standards-compliant and future-oriented control cabinet construction is thus a decisive factor for success in industrial automation.