BS EN 60269-1:2007+A2:2014

This part of IEC60269 is applicable to fuses incorporating enclosed current-limiting fuse-links with rated breaking capacities of not less than 6kA, intended for protecting power-frequency a.c. circuits of nominal voltages not exceeding 1000V or d.c. circuits of nominal voltages not exceeding 1500V.

Subsequent parts of this standard, referred to herein, cover supplementary requirements for such fuses intended for specific conditions of use or applications.

Fuse-links intended to be included in fuse-switch combinations according to IEC60947‑3 should also comply with the following requirements.

NOTE1 For \'a\' fuse-links, details of performance (see 2.2.4) on d.c. circuits should be subject to agreement between user and manufacturer.

NOTE2 Modifications of, and supplements to, this standard required for certain types of fuses for particular applications – for example, certain fuses for rolling stock, or fuses for high-frequency circuits – will be covered, if necessary, by separate standards.

NOTE3 This standard does not apply to miniature fuses, these being covered by IEC60127.

The object of this standard is to establish the characteristics of fuses or parts of fuses (fuse-base, fuse-carrier, fuse-link) in such a way that they can be replaced by other fuses or parts of fuses having the same characteristics provided that they are interchangeable as far as their dimensions are concerned. For this purpose, this standard refers in particular to

• the following characteristics of fuses:

  • their rated values;

  • their insulation;

  • their temperature rise in normal service;

  • their power dissipation and acceptable power dissipation;

  • their time/current characteristics;

  • their breaking capacity;

  • their cut-off current characteristics and their I²t characteristics.

• type test for verification of the characteristics of fuses;

• the marking of fuses.