IEC 60269-1:2006/AMD1:2009

IEC 60269-1 ®
Edition 4.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Low-voltage fuses –
Part 1: General requirements
Fusibles basse tension –
Partie 1: Exigences générales
IEC 60269-1:2006/A1:2009
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IEC 60269-1 ®
Edition 4.0 2009-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
Low-voltage fuses –
Part 1: General requirements
Fusibles basse tension –
Partie 1: Exigences générales
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
N
CODE PRIX
ICS 29.120.50 ISBN 978-2-88910-085-9
– 2 – 60269-1 Amend. 1 © IEC:2009
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:
FDIS Report on voting
32B/534/FDIS 32B/540/RVD
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 maintenance result date indicated on the IEC web site 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• withdrawn,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.
_____________
1.2 Normative references
Replace "IEC 60695-2-1/0:1994" by "IEC 60695-2-10:2000".
Replace "IEC 60695-2-1/1:1994" by "IEC 60695-2-11:2000".
Replace "IEC 60695-2-1/2:1994" by "IEC 60695-2-12:2000".
Replace "IEC 60695-2-1/3:1994" by "IEC 60695-2-13:2000".

Add the following new definition:
2.1.12
linked fuse-carrier
a fuse-carrier which is mechanically linked to the fuse-base and gives a defined insertion and
withdrawal movement to the fuse-link
[This definition was definition 2.1.12 in IEC 60269-2-1, Section I, which has been withdrawn.]

60269-1 Amend. 1 © IEC:2009 – 3 –
Table 2
a a
In the note of Table 2, change “ Under consideration” to “ Values for fuse-links with rated
current less than 16 A are given in subsequent parts”.
Table 3
In Note a of Table 3, delete "or are under consideration".

6 Markings
Replace the second paragraph and the note by the following:
The marking is rubbed by hand for 5 s with a piece of cloth soaked with water and again for
5 s with a piece of cloth soaked with aliphatic solvent hexane.
NOTE It is recommended to use aliphatic solvent hexane with an aromatic content of maximum 0,1 volume
percentage, a kauributanol value of approximately 29, an initial boiling point of approximately 65 °C, a dry point of
approximately 69 °C and a density of approximately 0,68 g/cm .

7.1.2 Connections, including terminals
Replace the note by the following:
NOTE Requirements of screwless-type terminals are given in Annex E.
7.2 Insulating properties and suitability for isolation
Replace the second sentence of the first paragraph by the following:
The fuse shall be suitable for isolation when it is in its normal open position, the fuse-link
remaining inside the fuse-carrier, or when the fuse-link, and, when applicable, the fuse-carrier
is removed.
7.4 Operation
In the second and the third paragraph, first dash, replace (2x) "its fuse-element does not melt"
by "the fuse-link does not operate".

– 4 – 60269-1 Amend. 1 © IEC:2009
7.9.2 Leakage currents of equipment suitable for isolation
In the heading replace "equipment" by "fuses".
7.9.3 Additional constructional requirements for fuses for non-separable fuse-carriers,
suitable for insulation
Modify the title as follows:
7.9.3 Additional constructional requirements for fuses for linked fuse-carriers,
suitable for isolation
7.12.1 Resistance to rusting
Replace "8.2.4.2" by "8.2.2.3.2".
7.12.2 Resistance to season cracking
Replace "8.2.4.2" by "8.2.2.3.2".

8.1.1 Kind of tests
Replace the last paragraph by the following new paragraph:
If any part of the fuse is modified in a manner liable to adversely affect the result of a type
test already performed, that type test shall be repeated.

8.1.5.2 Testing of fuse-links of a homogeneous series
This change applies to the French text only.

Table 11
In Note a) of Table 11, replace "time current" by "time-current".

60269-1 Amend. 1 © IEC:2009 – 5 –
Table 12
d) b)
In the line for 8.11.1, replace "Mechanical strength " by "Mechanical strength ".

Table 13
Replace Table 13 by the following new Table 13:
Number of samples
Test according to subclause "g" "a"
fuse-links fuse-links
1 1 1 1 1 1 1 1 1 2 2
8.1.4 Dimensions X X   X X
8.1.5.1 Resistance X X X X X X X X X X X
8.4.3.1 a) Conventional non-fusing current X
8.4.3.2 Rated current X
8.4.3.3.1 Time-current characteristics
a)
X X
no. 4a
Gates, "g" fuse-links
8.4.3.3.2
a) I (10 s)
X
min
b) I (5 s)
X
max
c) I (0,1 s)
X
min
d) I (0,1 s)
X
max
Gates, "a" fuse-links     X X
8.4.3.5 Conventional cable overload protection test  X
a)
With the exception of "gD", "gG" and "gM", as adequate tests are carried out in connection with verification of the
gates (see 8.4.3.3.2).
NOTE The tests according to Table 13 may be performed at reduced voltages.

Table 14
In the line for 8.2, replace "Insulating properties" by "Insulating properties and suitability for
isolation".
– 6 – 60269-1 Amend. 1 © IEC:2009
8.2.1 Arrangement of the fuse-holder
Replace the last paragraph by the following:
For the verification of the suitability of the fuse for isolation, it shall be in its normal open
position, the fuse-link remaining inside the fuse-carrier, or the fuse-link, and, when applicable,
the fuse-carrier shall be removed.
8.2.2.2 Value of test voltage
Replace the existing text with the following new text:
The values of test voltage are shown in Table 15 as a function of the rated voltage of the
fuse-holder.
8.2.3 Verification of the suitability for isolation
Replace the existing text with the following new text:
Clearances and creepage distances shall be verified by dimensional measurement and by
voltage test.
8.4.3.5 Conventional cable overload protection (for "gG" fuse-links only)
Change the title to
8.4.3.5 Conventional cable overload protection test (for "gG" fuse-links only)
Place the last paragraph after the note.

Table 20
Change the note for k to
k :  see Figures 2 and 3.
60269-1 Amend. 1 © IEC:2009 – 7 –
Table 21 – Values of breaking capacity tests on d.c. fuses
Replace the value for the time constant by the following:
If the prospective current is higher than 20 kA:
15 ms to 20 ms
If the prospective current is equal to or less than 20 kA:

+20
0,3 b
0,5 (I) with a tolerance of % (value I in A).
8.11.2.2.5 Severities
In the Note replace "IEC 60695-2-1" by "IEC 60695-2-10 to 13".

Figure 3 – Time current zone for aM fuses
Replace "Time current" by "Time-current".

Figure 8 – Glow-wire and position of the thermocouple
Add to the drawing “Dimensions in millimetres”.

B.2 Calculation of the value of pre-arcing I t under the conditions of test no. 2
In the formula replace “(I t) ” by “(I t) ".
2 1 1
– 8 – 60269-1 Amend. 1 © IEC:2009
Add the following new Annex E:
Annex E
(normative)
Particular requirements for fuse-bases with screwless-type
terminals for external copper conductors
E.1 Scope
This annex applies to fuse-bases that fall within the scope of Subclause 1.1, feature
screwless-type terminals supporting a maximum current of 63 A, and are primarily intended
for the purpose of connecting unprepared copper conductors (see E.2.6) with a cross-section
of up to 16 mm .
For the purpose of this annex, screwless-type terminals shall be referred to as terminals and
copper conductors as conductors.
E.2 Terms and definitions
In addition to Clause 2, the following definitions apply:
E.2.1
clamping unit
part(s) of the terminal necessary for mechanical clamping and electrical connection of the
conductors including the part(s) which are necessary to ensure correct contact pressure
E.2.2
screwless-type terminal
terminal for the connecting and subsequent disconnection of one conductor per clamping unit
obtained directly or indirectly by means of springs, wedges or the like
NOTE Examples are given in Figure E.2.
E.2.3
universal terminal
terminal for the connection and disconnection of all types of conductors (rigid and flexible)
E.2.4
non-universal terminal
terminal for the connection and disconnection of a certain kind of conductor only (e.g. rigid-
solid conductors only or rigid-(solid and stranded) conductors only)
E.2.5
push-wire terminal
non-universal terminal in which the connection is made by pushing-in rigid (solid or stranded)
conductors
E.2.6
unprepared conductor
conductor which has been cut and the insulation of which has been removed over a certain
length for insertion into a terminal
NOTE 1 A conductor the shape of which is arranged for introduction into a terminal or of which the strands may
be twisted to consolidate the end, is considered to be an unprepared conductor.
NOTE 2 The term "unprepared conductor" means conductor not prepared by soldering of the wire, use of cable
lugs, formation of eyelets, etc., but includes its reshaping before introduction into the terminal or, in the case of
flexible conductor, by twisting it to consolidate the end.

60269-1 Amend. 1 © IEC:2009 – 9 –
E.6 Marking
In addition to Clause 6, the following requirements apply:
• universal terminals:
– no marking.
• non-universal terminals:
– terminals declared for rigid-solid conductors shall be marked by t
...