This part of IEC 60269 is applicable to fuses incorporating enclosed current-limiting fuse-links with rated breaking capacities of not less than 6 kA, intended for protecting power-frequency a.c. circuits of nominal voltages not exceeding 1 000 V or d.c. circuits of nominal voltages not exceeding 1 500 V. 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 IEC 60947-3 should also comply with the following requirements. NOTE 1 For "a" fuse-links, details of performance (see 2.2.4) on d.c. circuits should be subject to agreement between user and manufacturer. NOTE 2 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. NOTE 3 This standard does not apply to miniature fuses, these being covered by IEC 60127.