This standard applies to relays whose main contacts are used to connect to circuits with a rated voltage not exceeding AC 1000V or DC 1500V. This standard also specifies supplementary requirements for relays with fuses. This standard applies to relays of any rated current, various structural types or various intended uses.
GB 14048.2-2001 history
2020GB/T 14048.2-2020 Low-voltage switchgear and controlgear—Part 2: Circuit-breakers
2008GB 14048.2-2008 Low-voltage switchgear and controlgear.Part 2: Circuitm-breakers
2001GB 14048.2-2001 Low-voltage switchgear and controlgear Low-voltage circuit breakers