What is IEC 60439-3 Ed. 2 2018?

IEC 60439-3 Ed. 2, also known as IEC 60439-3:2018, is a technical standard published by the International Electrotechnical Commission (IEC). This standard defines the requirements for low-voltage switchgear and control gear assemblies. It applies to stationary equipment intended for indoor use and for use in enclosures.

Scope of IEC 60439-3 Ed. 2 2018

This standard covers power switchgear and control gear assemblies with rated voltages up to 1000 V AC or 1500 V DC. It establishes general rules for the design, construction, and testing of these assemblies. These rules ensure that the assemblies have adequate performance and provide a safe operating environment.

Key Components of IEC 60439-3 Ed. 2 2018

IEC 60439-3 Ed. 2 specifies several key components that need to be considered when designing switchgear and control gear assemblies. These include main busbars, functional units, protective devices, and auxiliary circuits. The standard provides requirements for their selection, installation, and coordination to ensure functionality and safety.

Benefits of Complying with IEC 60439-3 Ed. 2 2018

Complying with IEC 60439-3 Ed. 2 ensures that switchgear and control gear assemblies meet internationally recognized safety and performance standards. Manufacturers who adhere to this standard produce reliable and high-quality products that are safe to operate. In addition, compliance facilitates interoperability and compatibility between different manufacturers' products.