Issuing body: GB

GB/T 7251.1-2023

Chinese low-voltage assembly standard

GB/T 7251.1 is the Chinese national standard for low-voltage switchgear and controlgear assemblies, adopted from IEC 61439-1 and covering the same 1000 V AC and 1500 V DC scope. The 2013 edition was an identical adoption of IEC 61439-1:2011; the current edition is GB/T 7251.1-2023, and the designation shifted from mandatory GB to recommended GB/T. For an exporter the practical question is documentary rather than technical: alignment with IEC means the engineering largely transfers, while CCC marking scope and the form of verification evidence do not automatically.

Technical alignment with IEC is high. Certification evidence is issued per regime, so CCC documentation is prepared on its own track.

Official source — GB →

Technical background

Standards

Which busbar standard applies to your job

A decision tree from product type, voltage class and destination market to the governing standard set, with each standard placed at its actual scope boundary.

Standards

GB/T 7251 and IEC 61439: how closely they align

How GB/T 7251.1-2023 aligns with IEC 61439-1, what CCC marking actually covers, and why certification paperwork does not travel between markets.