WG 1 - TC 23/SC 23E/WG 1

The contents of the corrigendum of March 2020 have been included in this copy.

IEC 60898-3:2019 applies to DC circuit-breakers, having a rated DC voltage not exceeding 440 V, a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 10 000 A.
These circuit-breakers are intended for the protection against overcurrents of wiring installations of buildings and similar applications; they are designed for use by uninstructed people and for not being maintained.

IEC 60898-2:2016 gives additional requirements for single- and two-pole circuit-breakers which, in addition to the above characteristics, are suitable for operation with direct current, and have a rated DC voltage not exceeding 220 V for single-pole and 440 V for two-pole circuit-breakers, a rated current not exceeding 125 A and a rated DC short-circuit capacity not exceeding 10 000 A. This second edition cancels and replaces the first edition published in 2000 and Amendment 1:2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) alignment with second edition of IEC 60898-1;
b) introduction of test Icn1.
This publication is to be read in conjunction with IEC 60898-1:2015.

IEC 60898-1:2015 applies to a.c. air-break circuit-breakers for operation at 50 Hz, 60 Hz or 50/60 Hz, having a rated voltage not exceeding 440 V (between phases), a rated current not exceeding 125 A and a rated short-circuit capacity not exceeding 25 000 A. This second edition cancels and replaces the first edition published in 2002, Amendment 1:2002 and Amendment 2:2003. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) Revision of 9.5 Terminals
b) Revision of the test of glow wire
c) Simplification of the figures for short circuit tests.
The contents of the corrigendum of November 2015 have been included in this copy. This bilingual version (2016-11) corresponds to the English version, published in 2015-03. The French version of this standard has not been voted upon.

Applies to auxiliary contact units associated (or intended to be associated) with circuit-breakers for overcurrent protection, and with residual current operated circuit-breakers with or without integral overcurrent protection for household and similar installations, having a rated voltage not exceeding 440 V a.c. and 250 V d.c., and a rated current not exceeding 10 A.