This Recommendation applies to surge protective devices (SPDs) to be used for Ethernet primary protection in surge voltage environments with a peak value of 2.5 kV and above. It covers the following device parameters:

a) electrical surge

b) electrical d.c.

c) identification and marking.

This Recommendation does not deal with:

a) mountings for SPDs and their effect on characteristics;

b) mechanical dimensions;

c) quality assurance requirements;

d) units containing current limiters;

e) signal performance parameters, standards such as [b-IEC 60603-7-7] may be used for this purpose;

f) diagnostic properties such as indicators and status monitor outputs.