You cannot use Part 2 alone. You must always read Part 1 first, then apply the specific amendments or exclusions from Part 2.
If you have searched for , you are likely working on a low-voltage (LV) switchgear and controlgear assembly project. You need the technical rules for design, verification, and testing. iec 61439-1 and 2 pdf
This standard specifically focuses on power switchgear and controlgear assemblies, including: You cannot use Part 2 alone