FprEN IEC 60269-3:2024

SLOVENSKI STANDARD
oSIST prHD 60269-3:2022
01-julij-2022
Nizkonapetostne varovalke - 3. del: Dodatne zahteve za varovalke, ki jih
uporabljajo nestrokovne osebe (uporaba varovalk zlasti v gospodinjstvu in
podobnih okoljih) - Primeri standardiziranih sistemov varovalk od A do F
Low-voltage fuses - Part 3: Supplementary requirements for fuses for use by unskilled
persons (fuses mainly for household or similar applications) - Examples of standardized
systems of fuses A to F
Fusibles basse tension - Partie 3: Exigences supplémentaires pour les fusibles destinés
à être utilisés par des personnes non qualifiées (fusibles pour usages essentiellement
domestiques et analogues) - Exemples de systèmes de fusibles normalisés A à F
Ta slovenski standard je istoveten z: prHD 60269-3:2022
ICS:
29.120.50 Varovalke in druga Fuses and other overcurrent
nadtokovna zaščita protection devices
oSIST prHD 60269-3:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prHD 60269-3:2022
oSIST prHD 60269-3:2022
32B/719/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60269-3 ED5
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-05-06 2022-07-29
SUPERSEDES DOCUMENTS:
32B/712/CD, 32B/717/CC
IEC SC 32B : LOW-VOLTAGE FUSES
SECRETARIAT: SECRETARY:
Germany Mr Michael Altenhuber
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
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CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
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This document is still under study and subject to change. It should not be used for reference purposes.
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TITLE:
Low-voltage fuses - Part 3: Supplementary requirements for fuses for use by unskilled persons
(fuses mainly for household or similar applications) - Examples of standardized systems of
fuses A to F
PROPOSED STABILITY DATE: 2025
NOTE FROM TC/SC OFFICERS:
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

oSIST prHD 60269-3:2022
IEC 60269-3:2010 IEC 2022
2 Secr Remark: The content different in this WD to the presently valid version of
3 IEC 60269-3, Ed 4.2 is marked in red in this document. Content has only been
4 added/changed in chapters 1 and 6.
6 CONTENTS
7 FOREWORD . 10
8 1 General scope . 12
9 1.2 Normative references . 13
11 Fuse system A – D type fuse system . 13
12 1 General . 13
13 1.1 Scope . 14
14 2 Terms and definitions . 14
15 3 Conditions for operation in service. 14
16 4 Classification . 14
17 5 Characteristics of fuses . 14
18 5.2 Rated voltage . 14
19 5.3.1 Rated current of the fuse-link. 14
20 5.3.2 Rated current of the fuse-holder . 14
21 5.3.3 Rated current of the gauge-piece . 15
22 5.5 Rated power dissipation of a fuse-link and rated acceptable power
23 dissipation of a fuse-holder . 15
24 5.6 Limits of time-current characteristics . 15
25 5.6.1 Time-current characteristics, time-current zones and overload curves . 15
26 5.6.2 Conventional times and currents . 15
27 5.6.3 Gates . 16
28 5.7 Breaking range and breaking capacity . 16
29 5.7.2 Rated breaking capacity . 16
30 6 Markings . 16
31 6.4 Marking of the gauge-pieces . 16
32 7 Standard conditions for construction . 17
33 7.1 Mechanical design . 17
34 7.1.2 Connections including terminals . 17
35 7.1.3 Fuse-contacts . 17
36 7.1.4 Construction of a gauge-piece . 17
37 7.1.6 Construction of a fuse-carrier . 18
38 7.1.7 Construction of a fuse-link . 18
39 7.1.8 Non-interchangeability . 18
40 7.1.9 Construction of a fuse-base . 19
41 7.2 Insulating properties and suitability for isolation . 19
42 7.3 Temperature rise, power dissipation of the fuse-link and acceptable power
43 dissipation of the fuse-holder. 20
44 7.7 I t characteristics . 21
45 7.7.1 Pre-arcing I t values . 21
46 7.7.2 Operating I t values . 21

oSIST prHD 60269-3:2022
– 4 – IEC 60269-3:AMD2: IEC 2019
47 7.8 Overcurrent discrimination of "gG" fuse-links . 21
48 7.9 Protection against electric shock . 21
49 8 Tests . 22
50 8.1.4 Arrangement of the fuse and dimensions . 22
51 8.2 Verification of the insulating properties and of the suitability for isolation . 23
52 8.2.1 Arrangement of the fuse-holder . 23
53 8.2.6 Creepage distances, clearances and distances through sealing
54 compound. 23
55 8.3 Verification of temperature rise and power dissipation . 24
56 8.3.1 Arrangement of the fuse . 24
57 8.3.3 Measurement of the power dissipation of the fuse-link . 24
58 8.3.5 Acceptability of test results . 24
59 8.5.1 Arrangement of the fuse . 25
60 8.5.2 Characteristics of the test circuit . 25
61 8.5.5 Test method . 25
62 8.5.8 Acceptability of test results . 25
63 8.7.4 Verification of overcurrent discrimination . 25
64 8.9 Verification of resistance to heat . 26
65 8.9.1 Fuse-base . 26
66 8.9.2 Fuse-carrier . 27
67 8.10 Verification of non-deterioration of contacts . 28
68 8.10.1 Arrangement of the fuse . 28
69 8.10.2 Test method . 28
70 8.10.3 Acceptability of test results . 29
71 8.11 Mechanical and miscellaneous tests . 29
72 8.11.1 Mechanical strength . 29

73 Annex AA (informative) Special test for cable overload protection (for fuse system A) . 68
75 Fuse system B – Cylindrical fuses (NF cylindrical fuse system). 69
76 1 General . 69
77 1.1 Scope . 69
78 2 Terms and definitions . 69
79 3 Conditions for operation in service. 69
80 4 Classification . 70
81 5 Characteristics of fuses . 70
82 5.2 Rated voltage . 70
83 5.3.1 Rated current of the fuse-link. 70
84 5.3.2 Rated current of the fuse-holder . 70
85 5.5 Rated power dissipation of a fuse-link and rated acceptable power
86 dissipation of a fuse-holder . 70
87 5.6.2 Conventional times and currents . 70
88 5.6.3 Gates . 71
89 5.7.2 Rated breaking capacity . 71
90 6 Markings . 71
91 7 Standard conditions for construction . 71
92 7.1 Mechanical design . 72
93 7.1.2 Connections including terminals . 72
94 7.1.6 Construction of a fuse-carrier . 72
95 7.1.7 Construction of a fuse-link . 72

oSIST prHD 60269-3:2022
IEC 60269-3:2010 IEC 2022
96 7.1.8 Non-interchangeability . 72
97 7.1.9 Construction of a fuse-base . 73
98 7.2 Insulating properties and suitability for isolation . 73
99 7.3 Temperature rise, power dissipation of the fuse-link and acceptable power
100 dissipation of the fuse-holder. 74
101 7.7 I t characteristics . 74
102 7.7.1 Pre-arcing I t values . 74
103 7.7.2 Operating I t values . 74
104 7.8 Overcurrent discrimination of "gG" fuse-links . 74
105 7.9 Protection against electric shock .
...