This Rules applies to the CQC safety certification of copper conductor terminal blocks in auxiliary devices of low-voltage switchgear and control equipment, including: Industrial or similar screw-type or non-screw-type terminal blocks mounted on brackets to provide electrical connections for copper conductors and mechanical connections. These terminal blocks are used in circuits with a rated voltage not exceeding 1000 V ac (1140 V), a frequency up to 1000 Hz or 1500 V dc.