IEC 60999-2:2003 ED2

Connecting devices - Electrical copper conductors - Safety requirements for screw-type and screwless-type clamping units - Part 2: Particular requirements for clamping units for conductors above 35 mm2 up to 300 mm2 (included)

Publication date:   May 9, 2003

General information

60.60 Standard published   May 9, 2003


TC 121/SC 121A Low-voltage switchgear and controlgear

International Standard

29.130.20   Low voltage switchgear and controlgear | 29.120.20   Connecting devices



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IEC 60999-2:2003 Applies to screw-type and screwless-type clamping units for connecting devices, either as separate entities or as integral parts of equipment, for the connection of electrical copper conductors (complying with IEC 60228), rigid stranded and/or flexible, having a cross-section above 35 mm2 and up to and including 300 mm2 and equivalent AWG/kcmil sizes with a rated voltage not exceeding 1 000 V a.c. and a frequency up to and including 1 000 Hz and 1 500 V d.c. It applies to clamping units primarily suitable for connecting unprepared conductors. This standard does not apply to clamping units:
- for connection by crimping or soldering;
- for non-universal clamping units defined in 3.10.2 of IEC 60999-1.
It has the status of a group safety publication in accordance with IEC Guide 104.

Life cycle


IEC 60999-2:1995 ED1


IEC 60999-2:2003 ED2
60.60 Standard published
May 9, 2003