This standard specifies requirements for terminal blocks with screw-type or screwless type terminals primarily intended for industrial or similar use and to be fixed to a support to provide electrical and mechanical connection between copper conductors. It applies to terminal blocks intended to connect round copper conductors, with or without special preparation, having a cross-section between 0.2 mm2and 300 mm2(AWG 24/600 MCM), intended to be used in circuits of a rated voltage not exceeding 1 000 V a.c. up to 1 000 Hz or 1 500 V d.c.It does not apply to terminal blocks or connecting devices forming an integral part of equipment which are dealt with in the relevant product standards.This standard does not apply to:- connecting devices requiring the fixing of special devices to the conductors before clamping them into the terminal, for example flat push-on connectors;- connecting devices requiring twisting of the conductors, for example those with twisted joints;- connecting devices providing direct contact to the conductors by means of edges or points penetrating the insulation,which are dealt with in other product standards.Note.- This standard may be used as a guide for special types of terminal blocks (e.g. disconnecting terminal blocks) when appropriate specifications are not available.

Under Revision see DR 00287 First published as AS 3947.7.1-1996.