Iec 61439-1: Standard Pdf Work

IEC 61439-1 is a standard that specifies requirements for low-voltage power distribution assemblies (PDA) used in electrical distribution systems. The standard is part of a series of IEC standards that cover low-voltage switchgear and controlgear assemblies. The full title of the standard is "Low-voltage power distribution assemblies - Part 1: Busbar trunking systems (busways)".

: Ensuring the enclosure and internal components can withstand environmental stresses and mechanical impacts. Shared Responsibility iec 61439-1 standard pdf

Yes, but note that the standard applies to the enclosure and power distribution parts. The PLC itself must comply with IEC 61131-2. The switchgear assembly as a whole must still meet 61439-1 temperature and clearance requirements. IEC 61439-1 is a standard that specifies requirements