Historical
IEC 60947-7-1 Ed. 2.0 b:2002
Low-voltage switchgear and controlgear - Part 7-1: Ancillary equipment - Terminal blocks for copper conductors
Specifies requirements for terminal blocks with screw-type or screwless type terminals, primarily intended for industry, having a cross-section between 0.2 mm2 and 300 mm2 (AWG 24/600 MCM).
International Electrotechnical Commission [iec]