: An overview of the series structure and its application in power distribution.

Part 2 places heavier emphasis on —a major challenge for modern high-efficiency, compact panels.

In the world of electrical engineering, safety and reliability are not optional—they are mandatory. For low-voltage switchgear and controlgear assemblies (commonly known as panels, switchboards, or distribution boards), the global benchmark for compliance is the .

While Part 1 provides the "constitution," Part 2 provides the "laws" specifically for power switchgear (typical applications: main distribution boards, motor control centers, industrial panels).

To understand the importance of the new standard, one must look back. The old series had a fundamental flaw: it allowed "design verification" to be separated from "individual testing" in a way that created loopholes.