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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
low-voltage switchgear and controlgear Ancillary equipment Section 1:Terminal blocks for copper conductors
WITHDRAWN published on 21.12.1998
Selected format:Low-voltage switchgear and controlgear—Part 7-1:Ancillary equipment—Terminal blocks for copper conductors
WITHDRAWN published on 14.9.2006
Selected format:Low-voltage switchgear and controlgear Ancillary equipment Section 2:Protective conductor terminal blocks for copper conductors
WITHDRAWN published on 21.12.1998
Selected format:Low-voltage switchgear and controlgear—Part 7-2:Ancillary equipment—Protective conductor terminal blocks for copper conductors
WITHDRAWN published on 14.9.2006
Selected format:Low-voltage switchgear and controlgear Multiple function equipment Section 2:Control and protective switching devices(or equipment)(CPS)
WITHDRAWN published on 21.12.1998
Selected format:Low-voltage switchgear and controlgear—Part 6-2:Multiple function equipment—Control and protective switching devices(or equipment)(CPS)
WITHDRAWN published on 19.9.2008
Selected format:Aerial insulated cables with rated voltages of 10kV and 35kV
WITHDRAWN published on 4.1.1993
Selected format:-
WITHDRAWN published on 1.1.1978
Selected format:Types and safety technical requirements of system earthing
WITHDRAWN published on 4.1.1993
Selected format:Standard colours for topographic maps
WITHDRAWN published on 4.1.1993
Selected format:Latest update: 2026-07-30 (Number of items: 2 290 198)
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