IEC 60269-2:2013/AMD1:2016

IEC 60269-2 ®
Edition 5.0 2016-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AM ENDMENT 1
AM ENDEMENT 1
Low-voltage fuses –
Part 2: Supplementary requirements for fuses for use by authorized persons
(fuses mainly for industrial application) – Examples of standardized systems of
fuses A to K
Fusibles basse tension –
Partie 2: Exigences supplémentaires pour les fusibles destinés à être utilisés par
des personnes habilitées (fusibles pour usages essentiellement industriels) –
Exemples de systèmes de fusibles normalisés A à K

IEC 60269-2:2013-07/AMD1:2016-08(en-fr)

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IEC 60269-2 ®
Edition 5.0 2016-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AM ENDMENT 1
AM ENDEMENT 1
Low-voltage fuses –
Part 2: Supplementary requirements for fuses for use by authorized persons

(fuses mainly for industrial application) – Examples of standardized systems of

fuses A to K
Fusibles basse tension –
Partie 2: Exigences supplémentaires pour les fusibles destinés à être utilisés par

des personnes habilitées (fusibles pour usages essentiellement industriels) –

Exemples de systèmes de fusibles normalisés A à K

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.50 ISBN 978-2-8322-3510-2

– 2 – IEC 60269-2:2013/AMD1:2016
© IEC 2016
FOREWORD
This amendment has been prepared by subcommittee 32B: Low Voltage Fuses, of IEC
technical committee 32: Fuses.
The text of this amendment is based on the following documents:
CDV Report on voting
32B/641/CDV 32B/648/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
1.1 Scope
Replace
Fuses System H: Fuses with fuse-links having "gD" and "gN" characteristic (class J class L
time delay and non time delay fuse types)
by the following new text:
Fuses System H: Fuses with fuse-links having "gD" and "gN" characteristic (class J class L
and class T time delay and non time delay fuse types)

Fuse system A – Fuses with fuse-links with blade contacts (NH fuse system)
7.1.3 Fuse-contacts
Replace the first paragraph of Subclause 7.1.3 by the following new text:
The contact surfaces of fuse-links and fuse-bases should be silver-plated; If the surface
plating of the blade contacts of a fuse-link or the contacts of the fuse-base is other than silver,
the test according to 8.10 shall be conducted with dummy fuse-links as described in 8.10.1.
Permissable combinations of surface plating shall be defined by the manufacturer.

© IEC 2016
8.3.1 Arrangement of the fuse
Replace the second paragraph of Subclause 8.3.1 by the following new text:
In case the test arrangement contains more than one fuse, the test specimens are mounted in
the conventional service position on a wooden plate or other insulating material at a distance
between centre lines of 3 times e according to Figure 101.
8.7.4 Verification of overcurrent distribution
Replace the second paragraph of Subclause 8.7.4 by the following new text:
The samples are arranged as for the breaking capacity test according to 8.5 and Table 20,
column No.2, of IEC 60269-1:2014 regarding the test circuit and tolerance of current.

Replace the fourth and fifth paragraphs of Subclause 8.7.4 by the following new text:
1,1⋅U
n
The test voltage for all fuses is with tolerances of –3 % / +2 %.
Add, at the end of Subclause 8.7.4, the following new text:
2 2
Prospective currents for minimum pre-arcing I t and maximum operating I t are +/–5 %.

Figure 102 – Fuse-bases for fuse-links with blade contacts
Replace the existing Figure 102 with the following new Figure 102:

– 4 – IEC 60269-2:2013/AMD1:2016
© IEC 2016
4)
150 ± 1
n
2)
v
C
A
4)
B
D
4)
25 ± 0,5
n
w
7)
x
y
7)
h
IEC
Key
A partition wall
B see note 1)
C contacts
D contact surface, see note 5)

Fuse system F – Fuses with fuse-links having cylindrical contact caps (NF cylindrical
fuse system)
1.1 Scope
Replace the first sentence of the scope by the following new text:
The following additional requirements apply to fuse-links having cylindrical caps with or
without striker, complying with the dimensions specified in Figures 601 and 603. Such fuses
have rated currents not exceeding 125 A and rated voltages up to and including 1 000 V
a.c.or 1 500 V d.c.
Table 605 – Conventional time and current for "gG" fuse-links with rated current lower
than 16 A
Replace, in the second row, third column of Table 605 the term "I " by "I ".
n nf
8.7.4 Verification of overcurrent discrimination
Replace the fourth and fifth paragraphs of Subclause 8.7.4 by the following new text:
r
w
p
g
z
3)
t
p
s
© IEC 2016
1,1⋅U
n
The test voltage for all fuses is with tolerances of –3 % / +2 %.
8.9 Verification of resistance to heat
Add, at the beginning of Subclause 8.9, the following new text:
These tests apply to fuse-links and fuse-bases.

Figure 601 – Fuse-links with cylindrical caps
In the third row, second column of the table in Figure 601, replace "38 ± 0,6" by "+0,9 / −0,6".

Figure 602 – Fuse-links with cylindrical contact caps with striker – Additional
dimensions for sizes 14 × 51 and 22 × 58 only
Add the word "NOTE" at the beginning of the sentence immediately following Figure 602.

Figure 603 – Base for fuse-links with cylindrical caps
In the second row, second column of the table in part 1 of Figure 603, replace "16“ by "25“,
In the third row, second column of the table in part 1 of Figure 603, replace "25“ by "32“.

Fuse system G – Fuses with fuse-links with offset blade contacts (BS clip-in fuse
system)
Figure 704 – Time-current zones for "gG" fuse-links
Delete the phrase "Dimensions in millimeters".

Fuse system H – Fuses with fuse-links having "gD" and "gN" characteristics (class J,
class T, and class L time delay and non time delay fuse types)
6.1 Markings of fuse-holders
Replace the text of Subclause 6.1 by the following new text:
"In addition to IEC 60269-1, the following marking applies:
– size or reference."
Figure 802 – Class L fuse-links (700 A to 6 000 A)
In row E, fifth column of the table in Figure 802, replace "130" by "128".

– 6 – IEC 60269-2:2013/AMD1:2016
© IEC 2016
Figure 803 – Fuse-base and contacts for class J fuse-links 1 A to 600 A
Replace the last two columns of the table in Figure 803 with the following new columns:
i −
Diameter Diameter of
clearance stud
hole
− −
− −
6,75 6,0
6,75 6,0
10,5 10,0
12,5 12,0
Figure 806 – Fuse-base and contacts for class T fuse-links 1 A to 1 200 A
Replace the table in Figure 806 by the following new table:
Drawing I Dimensions
n
mm
Max
a b c d e f g h i j
A
Minimum Distance Minimum Nominal Minimum Minimum Max. Clearance Diameter Minimum Diamet
width between distance diameter width of width of hole clearance clearance er of
contact contact between fuse-link rejection end stop spacing hole stud
clips clips end stops slot
A 30 7,3 23,6 39,12 14,30 - 3,18 - - - - -
60 9,9 18,8 40,64 20,62 1,72 3,18 - - - - -
100 - - - - - - 8,46 6,35 7,14 76,02 6,47
200 - - - - - - 10,41 63,67 8,94 83,57 7,93
B
400 - - - - - - 12,19 69,06 10,31 93,10 9,47
600 - - - - - - 14,22 11,11 12,29 102,21 11,45
800 - - - - - - 16,0 12,70 13,89 110,95 13,03
1200 - - - - - - 15,03 14,29 15,47 134,68 14,63

Fuse system J – Fuses with fuse-links having "gD class CC" and "gN class CC"
characteristics (class CC time delay and non-time delay fuse types)
1.1 Scope
Delete, in the first paragraph of Subclause 1.1, the references to Figures 1003 and 1004.

6.1 Markings of the fuse-holders
Replace the text of Subclause 6.1 by the following new text:
"In addition to IEC 60269-1, the following marking applies:
– size or reference."
© IEC 2016
Figure 1007 – Time-current zones for class CC "gN" fuses
Replace the existing Figure 1007 by the following new Figure 1007:
0.1
1A 2A 3.5A 6A 10A 17.5A
0.01
1.00 10.00 100.00 1000.00
Prospective current (A)
IEC
Fuse system K – gK fuse-links with blade contacts for bolted connections – High
current fuse-link ratings from 1
...