IEC 61439 Explained: Design Verification and Routine Verification for LV Assemblies
If you buy or specify low-voltage switchgear, you will see the letters IEC 61439 on almost every datasheet and declaration of conformity. This international standard defines how low-voltage switchgear and controlgear assemblies must prove their safety and reliability. Yet many purchasers treat it as a stamp they never read. This guide explains what IEC 61439…