标准摘要
[中文适用范围]： 旨在与 IEC 439-1 结合使用。第3部分补充、替换或修改了IEC 439-1中的相应条款。 [外文原描述]： This standard gives supplementary requirements for enclosed distribution boards (DBU), which are stationary, type-tested assemblies (TTA) for indoor use, containing protective devices and intended for use either in domestic (household) applications or in other places where unskilled persons have access for their use.
英文名称Low-voltage switchgear and controlgear assemblies. Part 3: Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use - Distribution boards