EN 60127-6:1994

SLOVENSKI STANDARD
01-december-1995
Miniature fuses - Part 6: Fuse-holders for miniature cartidge fuse-links (IEC 127-
6:1994)
Miniature fuses -- Part 6: Fuse-holders for miniature fuse-links
Geräteschutzsicherungen -- Teil 6: G-Sicherungshalter für G-Sicherungseinsätze
Coupe-circuit miniatures -- Partie 6: Ensembles-porteurs pour éléments de
remplacement miniatures
Ta slovenski standard je istoveten z: EN 60127-6:1994
ICS:
29.120.50 9DURYDONHLQGUXJD Fuses and other overcurrent
PHGWRNRYQD]DãþLWD protection devices
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
INTERNATIONALE IEC
127-6
INTERNATIONAL
Première édition
STANDARD
First edition
1994-04
Coupe-circuit miniatures –
Partie 6:
cartouches
Ensembles-porteurs pour
de coupe-circuit miniatures
Miniature fuses –
Part 6:
Fuse-holders for miniature
cartridge fuse-links
réservés — Copyright — all rights reserved
© CEI 1994 Droits de reproduction
of this publication may be reproduced or utilized in
Aucune partie de cette publication ne peut être reproduite ni No part
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in writing from the publisher.
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For price, see current catalogue

127-6 ©IEC:1994 – 3 –
CONTENTS
Page
FOREWORD 5
INTRODUCTION 7
Clause
1 Scope and object 9
2 Normative references
3 Definitions
4 General requirements
5 Preferred standard ratings and classifications for fuse-holders
6 Marking 21
7 Information for the user of fuse-holders
8 General notes on tests
9 Protection against electric shock 27
10 Clearances and creepage distances 27
11 Electrical requirements
12 Mechanical requirements
13 Thermal requirements
14 Endurance
15 Additional requirements 73
Annexes
A Test PC board for rated currents from 6,3 A to 10 A
B Type tests, test sequences and number of samples
C Insulation co-ordination
D Additional tests and requirements 85
Information for the correct application of the fuse-holder E

127-6
Oo IEC:1994 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
MINIATURE FUSES –
Part 6: Fuse-holders for miniature cartridge fuse-links
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization
comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to
promote international cooperation on all questions concerning standardization in the electrical and
electronic fields. To this end and in addition to other activities, the IEC publishes International Standards.
Their preparation is entrusted to technical committees; any IEC National Committee interested in
the subject dealt with may participate in this preparatory work. International, governmental and
non-governmental organizations liaising with the IEC also participate in this preparation. The IEC
collaborates closely with the International Organization for Standardization (ISO) in accordance with
conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of the IEC on technical matters, prepared by technical committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
3) They have the form of recommendations for international use published in the form of standards, technical
reports or guides and they are accepted by the National Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
International Standard IEC 127-6 has been prepared by sub-committee 32C: Miniature
fuses, of IEC technical committee 32: Fuses.
This first edition of IEC 127-6 cancels and replaces the first edition of IEC 257 published
in 1968 and amendment 2 to IEC 257 published in 1989.
The text of this standard is based on the following documents:
DIS Report on voting
32C(CO)71
32C(CO)72
32C(CO)71 A
Full information on the voting for the approval of this standard can be found in the repo rt
on voting indicated in the above table.
Annexes A and B form an integral part of this standard.
Annexes C, D and E are for information only.

– 7 –
127-6 ©IEC:1994
INTRODUCTION
According to the wish expressed by the users of miniature fuses, all standards, recommen-
dations and other documents relating to miniature fuses should have the same publication
number in order to facilitate reference to fuses in other specifications, for example,
equipment specifications.
Furthermore, a single publication number and subdivision into parts would facilitate the
establishment of new standards, because clauses and subclauses containing general
requirements need not be repeated.
The new IEC 127 series is thus subdivided as follows:
IEC 127: Miniature fuses (general title)
rt 1: Definitions for miniature fuses and general requirements for miniature
IEC 127-1, Pa
fuse-links
IEC 127-2, Part 2: Cartridge fuse-links
IEC 127-3, Pa rt 3: Sub-miniature fuse-links
IEC 127-4, Part 4: Universal modular fuse-links (UMF)
IEC 127-5, Part 5: Guidelines for quality assessment of miniature fuse-links
IEC 127-6, Pa rt 6: Fuse-holders for miniature cartridge fuse-links
IEC 127-7: (Free for further documents)
IEC 127-8: (Free for further documents)
IEC 127-9, Part 9: Test-holders and test circuits
IEC 127-10, Part 10: User guide
of IEC 127 covers requirements, test equipment and test methods for fuse-
This part
1 with regard to certain
holders. It is a self-standing document, which refers back to Pa rt
rts
definitions and the atmospheric conditions for test. It also makes reference to other pa
of IEC 127 with regard to dimensions and maximum power losses of fuse-links.

- 9 -
127-6 ©IEC:1994
MINIATURE FUSES —
Part 6: Fuse-holders for miniature cartridge fuse-links
1 Scope and object
1.1 This part of IEC 127 is applicable to fuse-holders for miniature cartridge fuse-links
according to IEC 127-2 and sub-miniature fuse-links according to IEC 127-3 for the protec-
rts thereof, normally
tion of electric appliances, electronic equipment and component pa
intended for use indoors. Examples of fuse-holder types with different features are given
in table 1.
- holders
Table 1 - Features of unexposed or exposed fuse
Types of mounting
1.1 Panel and base mounting
Printed circuit board mounting
1.2
2 Methods of fastening
Methods of fastening on panel:
2.1
2.1.1 Fixing nut fastening (threaded nut)
Snap-in fastening:
2.1.2
2.1.2.1 Fuse-base with an integral spring system
Fuse-base with a separate spring-nut (a nut fabricated, e.g. from thin spring steel
2.1.2.2
having an impression designed to accommodate the mating part)
Methods of fastening on printed circuit (PC) board:
2.2
2.2.1 Solder fastening
Plug-in fastening
2.2.2
3 Methods of insertion of the fuse-carrier into the fuse base
3.1 Screw insertion
3.2 Bayonet insertion
Plug-in insertion
3.3
4 Types of terminals
Screw terminals
4.1
4.2 Solder terminals
4.3 Quick connect terminals
4.4 Other solderless terminals: — crimp terminals
— wire wrap terminals
5 Protection against electric shock
5.1 Fuse-holder without integral protection against electric shock
5.2 Fuse-holder with integral protection against electric shock
Fuse-holder with enhanced integral protection against electric shock
5.3
NOTE — This list is not intended to be comprehensive and fuse-holders which are not listed are
not necessarily excluded from the scope.
This standard applies to fuse-holders with
a maximum rated current of 16 A and
-
- a maximum rated voltage of 1 500 V d.c. or 1 000 V a.c. and
- for use up to 2 000 m above sea-level, unless otherwise specified.

- 11 -
127-6 © IEC:1994
1.2 The object of this standard is to establish uniform requirements for safety and the
assessment of electrical, mechanical, thermal and climatic properties of fuse-holders and
the compatibility between fuse-holders and fuse-links.
2 Normative references
The following normative documents contain provisions which, through reference in this
text, constitute provisions of this part of IEC 127. At the time of publication, the editions
indicated were valid. All normative documents are subject to revision, and parties to
of IEC 127 are encouraged to investigate the possibility of
agreements based on this pa rt
applying the most recent editions of the normative documents indicated below. Members
of IEC and ISO maintain registers of currently valid International Standards.
International Electrotechnical Vocabulary (1EV) - Chapter 441:
IEC 50(441): 1984,
Switchgear, controlgear and fuses
IEC 50(581): 1978, International Electrotechnical Vocabulary (lEV) - Chapter 581:
Electromechanical components for electronic equipment
High-voltage test techniques - Part 1: General definitions and test
IEC 60-1: 1989,
requirements
rt 3: Measuring devices
IEC 60-3: 1976, High-voltage test techniques - Pa
4: Application guide for measuring
IEC 60-4: 1977, High-voltage test techniques - Pa rt
devices
Environmental testing - Part 1: General and guidance
IEC 68-1: 1988,
IEC 68-2: Environmental testing - Part 2: Tests
Environmental testing - Part 2: Tests - Tests A: Cold
IEC 68-2-1: 1990,
2: Tests - Tests B: Dry heat
IEC 68-2-2: 1974, Environmental testing - Part
Environmental testing - Part 2: Tests - Test Ca: Damp heat, steady
IEC 68-2-3: 1969,
state
IEC 68-2-6: 1982, Environmental testing - Part 2: Tests - Test Fc and guidance: Vibration
(sinusoidal)
rt 2: Tests - Test T: Soldering
IEC 68-2-20: 1979, Environmental testing - Pa
IEC 68-2-21: 1983, Environmental testing - Part 2: Tests - Test U: Robustness of termin-
ations and integral mounting devices
IEC 68-2-27: 1987, Environmental testing - Part 2: Tests - Test Ea and guidance: Shock
rt 2: Tests - Test XA and guidance:
IEC 68-2-45: 1980, Environmental testing - Pa
Immersion in cleaning solvents
Environmental testing - Part 2: Tests - Mounting of components,
IEC 68-2-47: 1982,
equipment and other articles for dynamic tests including shock (Ea), bump (Eb), vibration
(Fc and Fd) and steady-state acceleration and guidance

-13 -
127-6 ©IEC:1994
Method for determining the comparative and the proof tracking indices of
IEC 112: 1979,
solid insulating materials under moist conditions
Guide for the determination of thermal endurance properties of electrical
IEC 216-1: 1990,
1: General guidelines for ageing procedure and evaluation of
insulating materials - Part
test results
Test enclosures of non-injection type for constant relative humidity
IEC 260: 1968,
Fuse definitions
IEC 291: 1969,
IEC 291A: 1975, First supplement
rt 4: Protection for safety -
IEC 364-4-443: 1990, Electrical installations of buildings - Pa
Protection against over-
Chapter 44: Protection against overvoltages - Section 443:
voltages of atmospheric origin or due to switching
equipment; basic testing
Electromechanical components for electronic
IEC 512-8: 1993,
rt 8: Connector tests (mechanical) and
procedures and measuring methods - Pa
mechanical tests on contacts and terminations
IEC 529: 1989, Degrees of protection provided by enclosures (IP Code)
Classification of electrical and electronic equipment with regard to protec-
IEC 536: 1976,
tion against electric shock
Insulation co-ordination for equipment within low-voltage systems -
IEC 664-1: 1992,
Part 1: Principles, requirements and tests
2: Test methods - Section 2: Needle-flame
Fire hazard testing - Part
IEC 695-2-2: 1991,
test
Flat, quick-connect terminations
IEC 760: 1989,
Spring-operated impact-test apparatus and its calibration
IEC 817: 1984,
Connecting devices for low voltage circuits for household and similar
IEC 998-2-1: 1990,
2-1: Particular requirements for connecting devices as separate entities
rt
purposes - Pa
with screw-type clamping units
Preferred numbers - Series of preferred numbers
ISO 3: 1973,
Technical drawings - Method of indicating surface texture
ISO 1302: 1992,
3 Definitions
For the definitions of general terms used in this standard, reference should be made to
IEC 50(441) and IEC 50(581), International Electrotechnical Vocabulary (IEV), and to
IEC 664-1.
For definitions of terms relating to fuse-links, reference is made to IEC 127-1, IEC 291 and
IEC 291A.
For the purposes of this International Standard, the following definitions apply.

–15 –
127-6 ©IEC:1994
3.1 Fuse-holders
3.1.1 fuse-base: see 3.10 of IEC 127-1.
carrier: see 3.12 of IEC 127-1.
3.1.2 fuse-
see 3.9 of IEC 127-1.
3.1.3 fuse-holder:
A fuse-base with enclosed contacts, with or without a
unexposed fuse -holder:
3.1.4
fuse-carrier.
A fuse-base with exposed contacts (e.g. clips), with or
exposed fuse-holder:
3.1.5
without a fuse-carrier.
rating: see 3.16 of IEC 127-1.
3.2
T
...