kSIST FprEN IEC 63418:2026

• Status: Not Published
• Public Enquiry End Date: 30-Jul-2025
• ICS: 29.120.30 - Plugs, socket-outlets, couplers
• ICS: 29.120.40 - Switches
• Technical Committee: EPR - Electrical accessories
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 06-Oct-2026
• Due Date: 24-Nov-2026
• Directive: 2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
• Directive:

  ---

  2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Mandate: M/552 - [C(2016) 7641 final] Standardisation request as regards harmonised standards in support of Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility
• Ref Project: FprEN IEC 63418:2026 - Fixed accessories intended for household and similar purposes that supply power through an interface

• Amended By: oSIST prEN IEC 63418:2025/oprAA:2025 - Fixed accessories intended for household and similar purposes that supply power through an interface
• Effective Date: 05-Aug-2025

kSIST FprEN IEC 63418:2026 is a SIST Slovenian standard for fixed accessories intended for household and similar purposes that supply power through an interface. It sets safety and electromagnetic compatibility (EMC) requirements for accessories that deliver Extra Low Voltage through a USB port in fixed installations up to 250 V AC or an extra-low-voltage DC local/private distribution network up to 60 V, for indoor or outdoor use.

What does kSIST FprEN IEC 63418:2026 specify?

kSIST FprEN IEC 63418:2026 specifies the safety and EMC requirements for fixed accessories that supply power through an interface, together with the tests used to verify compliance. The document also covers only the mounting-box requirements needed for testing the accessory itself.

The scope is focused on accessories for household and similar purposes, not on the USB technology itself. USB performance, USB technology dimensions, and related product specifications are outside the document, so users need the IEC 62680 parts for the USB interface details.

The document is organized into:

• Clause 1 Scope
• Clause 2 Normative references
• Clause 3 Terms and definitions
• Clauses 4 to 25 covering general requirements, ratings, classification, marking, construction, environmental performance, electrical safety, EMC, and abnormal conditions
• Annex A for routine electric-strength control
• Annex B for transformer working-voltage measurement guidance
• Annex C for extra requirements for insulation-piercing terminals (IPT)

Annex	What it covers
Annex A	Safety-related routine tests for electric strength control of the accessory
Annex B	Guidance for measuring working voltage between transformer primary and secondary
Annex C	Additional requirements for accessories provided with IPT

What are the key requirements of kSIST FprEN IEC 63418:2026?

kSIST FprEN IEC 63418:2026 is built around safety by design, correct marking, suitable terminals, adequate enclosure performance, and EMC behavior under normal use and fault conditions. For design and verification, the most important clauses are 4 to 25, plus Annex A for routine production control and Annex C for IPT-specific products.

General safety basis and classification

Clause 4 requires accessories and surface-mounting boxes to be designed so that performance is reliable in normal use and safety is achieved by reducing risk to a tolerable level. Where IEC 62368-1 and IEC 62368-3 are used, the document applies minimum Cat III overvoltage category, pollution degree 2, material class min. IIIa, and use by ordinary persons.

Clause 7 classifies accessories by degree of protection against access to hazardous parts, ingress of solid foreign objects, ingress of water, earthing provision, connection means, installation method, and terminal connection capacity. In practice, this tells the manufacturer which construction route and test route apply to the product.

Ratings and USB output limits

Clause 6 requires the rated input voltage to match the nominal voltage of the fixed installation where the accessory is intended to be installed. It also requires the USB output rating - rated output voltage, current, and power - not to exceed the specifications of the relevant USB connector parts of IEC 62680.

For a buyer or engineer, this means the accessory must be matched to the installation supply and must stay within the USB interface limits used by the product.

Marking and user information

Clause 8 lists the required markings, including input voltage, nature of supply, USB output power or output rating, input frequency for AC, polarity for DC input, manufacturer identification, type reference, and protection marking where applicable. It also gives symbol requirements and visibility rules for markings that must remain visible during installation.

Clause 8 also requires durable, legible, indelible marking and gives a rub test using water and n-hexane. For products with special installation conditions, the instructions or catalogue must identify the required box, mounting position, SELV-only use, or other special provisions.

Protection against electric shock and earthing

Clause 10 requires hazardous live parts to remain inaccessible during normal use, even after removing parts that can be removed without a tool. For non-SELV supplies, accessible parts are limited to insulating material, certain small fixings, approved metal covers or plates, and accessible metal parts of USB ports.

Clause 10 also requires the USB output voltage to be SELV, and Clause 11 sets the earthing requirements where earthing is provided. Clause 11 includes a low-resistance connection check between the earthing terminal and accessible metal parts. In practice, this is what keeps a fault on the mains side from making the accessible metal unsafe.

Construction, terminals, and conductor handling

Clause 12 covers screw terminals, screwless-type terminals, and IPT in Annex C. Clause 13 covers barriers, conductor connection space, covers and cover-plates, openings, mounting means, inlet openings, membranes, switches, and capacitors bridging insulation between primary and secondary circuits.

This matters because the product must still be safe after installation, not just in the factory. It also means the enclosure, cable entry, and internal wiring arrangement must support the test sequence without exposing hazardous live parts or weakening creepage and clearance.

Environmental, mechanical, thermal, EMC, and abnormal-condition performance

Clauses 14 to 18 cover ageing, humidity, insulation resistance, electric strength, temperature rise, mechanical strength, and resistance to heat. The document also includes impact testing, cable-gland torque testing, USB port mechanical tests, and ball-pressure testing.

Clauses 19 to 22 cover screws and electrical connections, creepage and clearance distances, resistance to abnormal heat, fire and tracking, and resistance to rusting. Clauses 23 to 25 cover EMC immunity and emission, EMF requirements, and abnormal conditions, including fault and overload behavior, protection against electric shock after fault conditions, and short circuit in the looping circuit.

What terms does kSIST FprEN IEC 63418:2026 define?

kSIST FprEN IEC 63418:2026 defines the product and test language used throughout the document, so these terms are important when comparing designs and test results.

• Mounting box - a box intended for mounting in or on a wall, floor, or ceiling for flush or surface use with a fixed accessory.
• Terminal - a connection point intended for attaching conductors.
• Type test - a test on representative specimens of a design to show that the design meets the specified requirements.
• Routine test - a test carried out on each individual device during or after manufacture to check that it meets the criteria.
• Hazardous live part - a live part above the defined voltage limits for dry or wet conditions.
• Rated output voltage / rated output current / rated output power - the voltage, current, and power values assigned by the manufacturer to the USB port.
• Insulation-piercing terminal (IPT) - a terminal that connects conductors by piercing or otherwise making the conductor insulation ineffective, without prior stripping.

Who uses kSIST FprEN IEC 63418:2026?

kSIST FprEN IEC 63418:2026 is used by manufacturers of fixed USB power accessories, electrical installation product designers, test laboratories, certification bodies, and quality teams. It is also relevant to buyers and specifiers who need a product for household or similar use in fixed installations.

In practice, these users apply the document when:

• designing the accessory and its enclosure
• selecting terminals, earthing, and cable-entry parts
• preparing marking and installation instructions
• running type tests and routine production tests
• checking EMC behavior and fault safety
• verifying compatibility with the intended installation and USB interface

Which standards are used with kSIST FprEN IEC 63418:2026?

Standard	What it contributes
IEC 62680 (relevant part(s))	USB connector drawings and USB-related dimensional or rating constraints
IEC 60670-1	General-purpose mounting boxes
IEC 62368-1:2023	Base safety requirements for insulation, components, clearances, creepage distances, and related construction checks
IEC 62368-3:2017	Additional requirements for DC power transfer and the PSE-related context
IEC 60998 series	Connecting devices used when the accessory is supplied with connecting leads
IEC 61032	Test probes used for accessibility checks
IEC 60529	Degrees of protection against access, solid foreign objects, and water
IEC 60068-2-75	Hammer test method used for impact testing
IEC 60112	Tracking resistance method used for insulating materials
IEC 62911	Basis for the routine electric-strength tests in Annex A
CISPR 32	EMC emission requirements for multimedia equipment

What does the kSIST FprEN IEC 63418:2026 document contain?

kSIST FprEN IEC 63418:2026 contains tables, test methods, and verification procedures that are used in design qualification, type testing, routine testing, and certification work. The tables cover test voltages and frequencies, conductor sizes, terminal dimensions, pull forces, voltage-drop limits, thermal limits, creepage and clearance distances, and EMC-related test conditions.

The figures show test arrangements for membranes and grommets, terminal pull and deflection tests, USB port mechanical tests, and installation or test-wall setups. These figures are important because they define how the specimen is mounted and loaded during verification.

Annex A gives the routine electric-strength control sequence for production, Annex B gives a measurement method for transformer working voltage, and Annex C adds IPT-specific definitions, markings, documentation, and terminal requirements.

SLOVENSKI STANDARD
oSIST prEN IEC 63418:2025
01-julij-2025
Fiksni dodatki, namenjeni za gospodinjsko in podobno uporabo, ki se napajajo
prek vmesnika
Fixed accessories intended for household and similar purposes that supply power
through an interface
Appareils fixes prévus pour des usages domestiques et analogues qui assurent
l'alimentation électrique par l'intermédiaire d'une interface
Ta slovenski standard je istoveten z: prEN IEC 63418:2025
ICS:
29.120.30 Vtiči, vtičnice, spojke Plugs, socket-outlets,
couplers
oSIST prEN IEC 63418:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN IEC 63418:2025
oSIST prEN IEC 63418:2025
23B/1572/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63418 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-05-30 2025-08-22
SUPERSEDES DOCUMENTS:
23B/1502/CD, 23B/1511A/CC
IEC SC 23B : PLUGS, SOCKET-OUTLETS AND SWITCHES
SECRETARIAT: SECRETARY:
Italy Mr Cristiano Masini
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
Electromagnetic Compatibility,Safety
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
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
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Fixed accessories intended for household and similar purposes that supply power through an
interface
PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
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oSIST prEN IEC 63418:2025
2 IEC CDV 63418 ED1 © IEC 2025

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oSIST prEN IEC 63418:2025
IEC CDV 63418 ED1 © IEC 2025 3
CONTENTS
FOREWORD . 9
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 14
4 General requirements . 19
5 General remarks on tests . 19
5.1 General . 19
5.2 Products arrangement during test . 20
5.3 Ambient test condition. 20
5.4 Additional samples . 20
5.5 Routine tests . 20
6 Ratings . 20
6.1 Rated input voltage . 20
6.2 USB output ratings . 20
7 Classification . 20
7.1 Accessories classification . 20
7.1.1 20
7.1.2 21
7.1.3 21
7.1.4 21
7.1.5 21
7.1.6 21
7.1.7 22
7.1.8 22
7.1.9 22
7.1.10 22
7.1.11 22
8 Marking . 23
8.1 General . 23
8.2 Symbols . 23
8.3 Visibility of markings . 24
8.4 Particular requirements for markings on terminals other than phase
terminals . 25
8.5 IP code marking for surface-type mounting boxes forming an integral part of
accessories. 25
8.6 Additional requirement for marking. 25
8.7 Particular requirements for connecting devices of connecting leads . 26
8.8 Durability . 26
9 Checking of dimensions . 27
9.1 General . 27
10 Protection against electric shock . 27
10.1 General . 27
10.2 Accessibility of hazardous live part during normal use . 27
10.3 Requirements for accessible parts of accessory during normal use . 27

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4 IEC CDV 63418 ED1 © IEC 2025
10.3.1 27
10.3.2 28
10.4 Metal parts of the USB ports . 28
10.5 Output voltage protective measure . 28
10.6 Ventilation openings . 28
11 Provision for earthing . 28
11.1 Accessories provided with earthing terminals . 28
11.2 Accessible metal parts . 29
11.3 Connection with the earthing terminal . 29
12 Terminals . 29
12.1 General . 29
12.2 Terminals with screw clamping for external copper conductors . 30
12.2.1 30
12.2.2 33
12.2.3 33
12.2.4 33
12.2.5 33
12.2.6 35
12.2.7 35
12.2.8 36
12.2.9 37
12.2.10 37
12.2.11 38
12.3 Screwless-type terminals for external copper conductors . 38
12.3.1 38
12.3.2 38
12.3.3 38
12.3.4 38
12.3.5 38
12.3.6 39
12.3.7 39
12.3.8 39
12.3.9 39
12.3.10 39
12.3.11 40
12.3.12 41
12.4 Insulation piercing terminals (IPT) . 44
13 Construction of accessories . 44
13.1 Insulating linings, barriers and the like . 44
13.2 Connection of conductors . 44
13.3 Protection against electric shock provided by covers, cover-plates . 46
13.3.1 46
13.3.2 47
13.3.3 47
13.3.4 48
13.4 Openings in normal use . 48
13.5 Means for mounting the accessory . 48
13.6 Mounting plate of surface-type accessories . 48
13.7 Surface-type accessories having an IP code higher than IP20 . 48

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IEC CDV 63418 ED1 © IEC 2025 5
13.8 Metal strips of the earthing circuit . 49
13.9 Installation in boxes . 49
13.10 Inlet openings . 49
13.11 Fixing of membranes (grommets) . 49
13.12 Material for membranes . 50
13.13 Conductors used in accessories . 50
13.14 Switches used in accessories . 51
13.15 Capacitors bridging insulation between primary and secondary circuits of the
accessory . 51
13.16 Applicable clauses of IEC 62368-1:2023 . 52
13.17 Applicable clauses of IEC 62368-3:2017 . 52
14 Resistance to ageing, protection provided by enclosures, and resistance to
humidity . 52
14.1 Resistance to ageing . 52
14.2 Protection provided by enclosures . 53
14.2.1 General . 53
14.2.2 Protection against access to hazardous parts and against harmful
effects due to ingress of solid foreign objects . 53
14.2.3 Protection against harmful effects due to ingress of water . 54
14.3 Resistance to humidity . 56
15 Insulation resistance and electric strength . 57
15.1 General . 57
15.2 Test for measuring the insulation resistance . 57
15.3 Electric strength test . 57
16 Temperature rise . 58
16.1 General . 58
16.2 Test . 59
16.3 Test for accessories with loop terminals . 61
17 Mechanical strength . 62
17.1 General . 62
17.2 Impact test with pendulum hammer . 62
17.3 Test for accessories with a main part intended to be mounted directly on a
surface . 65
17.4 Torque test for cable glands . 66
17.5 Tests on covers, cover-plates or parts of them according to 13.3.3a) . 66
17.5.1 66
17.5.2 66
17.5.3 67
17.6 Tests on covers, cover-plates or parts of them according to 13.3.3b) . 67
17.7 Tests on covers, cover-plates or parts of them according to 13.3.3c) . 68
17.8 Verification of the outline of covers fixed without screws on a mounting
surface or supporting surface . 68
17.9 Verification of grooves, holes and reverse tapers . 71
17.10 Mechanical tests of USB ports . 71
17.10.1 General . 71
17.10.2 USB port lateral strain test . 72
17.10.3 Resistance to mechanical force on a USB port during insertion . 72
17.10.4 Impact test. 72
18 Resistance to heat . 72

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6 IEC CDV 63418 ED1 © IEC 2025
18.1 General . 72
18.2 Basic heating test . 73
18.3 Ball-pressure test at 125 °C . 73
18.4 Ball-pressure test at 70 °C or higher . 74
19 Screws, current-carrying parts and connections . 74
19.1 General . 74
19.2 Correct insertion of screws . 74
19.3 Contact pressure of electrical connections . 75
19.4 Screws and rivets used both as electrical and mechanical connections . 75
19.5 Material of current-carrying parts . 75
19.6 Contacts subjected to sliding actions . 76
19.7 Thread-forming and thread-cutting screws . 76
20 Creepage distances, clearances and distances through sealing compound . 76
20.1 General . 76
20.2 Insulating sealing compound . 78
21 Resistance of insulating material to abnormal heat, to fire and to tracking . 78
21.1 Resistance to abnormal heat and to fire . 78
21.1.1 General . 78
21.1.2 Glow-wire test . 78
21.2 Resistance to tracking. 80
22 Resistance to rusting . 80
23 EMC requirements . 81
23.1 General . 81
23.2 Immunity . 81
23.2.1 General . 81
23.2.2 Voltage dips and short interruptions . 82
23.2.3 Surge immunity test for 1,2/50 wave impulses . 82
23.2.4 Electrical fast transient/burst test . 83
23.2.5 Electrostatic discharge test . 83
23.2.6 Radiated electromagnetic field test . 84
23.2.7 Radio-frequency voltage test . 84
23.3 Emission . 84
23.3.1 General . 84
23.3.2 Low-frequency emission . 85
23.3.3 Radio-frequency emission . 85
24 Electromagnetic fields (EMF) requirements. 85
25 Abnormal conditions . 85
25.1 General . 85
25.2 Temperature rise under abnormal conditions . 85
25.2.1 Overview . 85
25.2.2 General . 85
25.3 Protection against electric shock after fault conditions arise . 87
25.4 Short circuit in the looping circuit . 87
Annex A (normative) Safety-related routine tests for electric strength test control -
Electric strength test of the accessory . 90
Annex B (informative) Guidance for the measurement of the working voltage between
Primary and Secondary of Transformer. 92

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Annex C (normative) Additional requirements for accessories provided with insulation-
piercing terminals . 93
Bibliography . 99

Figure 1 – Example of thread-forming screw (3.9) . 15
Figure 2 – Example of thread-cutting screw (3.10) . 15
Figure 3 – Examples of membranes and grommets . 16
Figure 4 – Test piston dimensions . 26
Figure 5 – Pillar terminals (3.5) . 31
Figure 6 – screw head terminals (3.7) terminals . 32
Figure 7 – Arrangement for checking damage to conductors . 34
Figure 8 – Information for deflection test . 43
Figure 9 – Verification of the requirements of 13.2 . 46
Figure 10 – Area A of the USB port . 53
Figure 11 – Types of test wall . 55
Figure 12 – Examples of current path for testing loop terminals . 62
Figure 13 – Sketches showing the application of the blows according to Table 17 . 64
Figure 14 – Arrangement for test on covers or cover-plates . 67
Figure 15 – Gauge (thickness about 2 mm) for the verification of the outline of covers
or cover-plates . 68
Figure 16 – Examples of application of the gauge of Figure 15 on covers fixed without
screws on a mounting surface or supporting surface . 69
Figure 17 – Examples of application of the gauge of Figure 15 in accordance with the
requirements of 17.8 . 70
Figure 18 – Gauge for verification of grooves, holes and reverse tapers . 71
Figure 19 – Sketch showing the direction of application of the gauge of Figure 18 . 71
Figure 20 – Ball pressure test apparatus . 73
Figure 21 – Diagrammatic representation of 21.1.2 . 79
Figure 22 – Minimum creepage and clearances on printed circuit boards . 87
Figure 23 – Circuit diagram for short circuit testing of the looping circuit . 88
Figure B.1 – . 92
Figure C.1 – Example of IPTs . 97
Figure C.2 – Example of test-points . 97
Figure C.3 – Temperature cycle for voltage drop test 12.4.11 . 98

Table 1 – Testing voltage and frequency . 19
Table 2 – Connectable nominal cross-sectional areas of copper conductors . 30
Table 3 – . 31
Table 4 – . 32
Table 5 – Values for pull test for screw-type terminals . 35
Table 6 – Composition of conductors . 36
Table 7 – Tightening torques for the verification of the mechanical strength of screw-
type terminal . 37
Table 8 – Values for flexing under mechanical load test for copper conductors . 40

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8 IEC CDV 63418 ED1 © IEC 2025
Table 9 – Test current for the verification of electrical and thermal stresses in normal
use for screwless-type terminals . 41
Table 10 – Nominal cross-sectional areas of rigid copper conductors for deflection test
of screwless-type terminals . 43
Table 11 – Deflection test forces for screwless-type terminals . 43
Table 12 – Forces to be applied to covers, cover-plates or actuating members whose
fixing is not dependent on screws . 47
Table 13 – External cable dimension limits for surface-type accessories . 49
Table 14 – Permissible temperature rise values . 59
Table 15 – Loop test current for accessories with loop terminals . 61
Table 16 – Height of fall for impact tests . 63
Table 17 – . 65
Table 18 – Torque test values for cable glands . 66
Table 19 – Resistance to heat of different types or parts of accessories . 72
Table 20 – Creepage distances, clearances and distances through insulating sealing
compound . 76
Table 21 – Immunity tests (overview) . 81
Table 22 – Voltage dip and short-interruption test values . 82
Table 23 – Surge immunity test voltages . 82
Table 24 – Fast transient test values . 83
Table 25 – Values for radiated electromagnetic field test of IEC 61000-4-3 . 84
Table A.1 – Test voltages . 90
Table C.1 – Maximum dimensions of copper conductors for IPT . 97

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IEC CDV 63418 ED1 © IEC 2025 9
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Fixed accessories intended for household and similar purposes that
supply power through an interface –

FOREWORD
a) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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IEC 63418 has been prepared by subcommittee XX: TITLE, of IEC technical committee XX: TITLE. It
is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
Full information on the voting for its approval can be found in the report on voting indicated in the
above table.
The language used for the development of this International Standard is English [change language if
necessary].
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available at

oSIST prEN IEC 63418:2025
10 IEC CDV 63418 ED1 © IEC 2025
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The committee has decided that the contents of this document will remain unchanged until the stability
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At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
oSIST prEN IEC 63418:2025
IEC CDV 63418 ED1 © IEC 2025 11
1 Scope
This document applies to fixed accessories designed to supply power at Extra Low Voltage through a
USB port connected to a fixed installation not exceeding 250 V AC or to an extra low voltage DC local
/ private distribution network not exceeding 60 V, intended for household and similar purposes, either
indoors or outdoors.
This document covers only those requirements for mounting boxes which are necessary for the tests
on the accessory.
NOTE 1 Requirements for general purpose mounting boxes are given in IEC 60670-1.
This document defines the safety and EMC requirements for accessories that supply power through
an interface.
Specifications, performance or dimensional requirements of the USB technology are not covered by
this standard; these are defined in the relevant part(s) of IEC 62680.
NOTE 2 Requirements concerning wireless interface are under consideration.
The document does not apply to:
– Socket-outlets incorporating USB power supply, covered by IEC 60884-3-1;
– Transformers, reactors, power supply units and combinations thereof, covered by IEC 61558
series;
– Power electronic converter systems and equipment covered by IEC 62477-1;
– Electrical power/energy transfer systems for electrically propelled road vehicles and
industrial trucks covered by IEC 61980 series;
– Electric Vehicles conductive power supply system covered by IEC 61851 series;
– Appliance couplers for household and similar general purposes covered by IEC 60320
series;
– DC plugs and socket-outlets systems covered by IEC / TR 62735 series;
– Luminaires couplers covered by IEC 61995 series;
– Equipment in the field of audio/video and similar technology, information technology and
communication technology covered by IEC 62368 series.
– Power supply using communication cabling such as PoE.
Accessories complying with this document are suitable for use at ambient temperatures not normally
exceeding +40 °C, but their average temperature over a period of 24 h does not exceed +35 °C, with a
lower limit of the ambient air temperature of −5 °C.
This document gives additional requirements for accessories provided with insulation-piercing
terminals, see C (normative).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
IEC 60068-2-75:2014, Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests
IEC 60112, Method for the determination of the proof and the comparative tracking indices of
solid insulating materials
IEC 60127 (all parts), Miniature fuses

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12 IEC CDV 63418 ED1 © IEC 2025
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60245 (all parts), Rubber insulated cables - Rated voltages up to and including 450/750 V
IEC 60317-0-1:2013, Specifications for particular types of winding wires - Part 0-1: General
requirements - Enamelled round copper wire
IEC 60317-0-1:2013/AMD1:2019,
IEC 60417:2024 DB:2024, Graphical symbols for use on equipment - 12-month subscription to
regularly updated online database comprising all graphical symbols published in IEC 60417
IEC 60423:2007, Conduit systems for cable management - Outside diameters of conduits for
electrical installations and threads for conduits and fittings
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60529:1989/AMD1:1999,
IEC 60529:1989/AMD2:2013,
IEC 60669 (all parts), Switches for household and similar fixed-electrical installations
IEC 60670 (all parts), Boxes and enclosures for electrical accessories for household and similar
fixed electrical installations
IEC 60670-1, Boxes and enclosures for electrical accessories for household and similar fixed
electrical installations - Part 1: General requirements
IEC 60695-2-10:2021, Fire hazard testing - Part 2-10: Glowing/hot-wire based test methods -
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2021, Fire hazard testing - Part 2-11: Glowing/hot-wire based test methods -
Glow-wire flammability test method for end products (GWEPT)
IEC 60998-2-1, Connecting devices for low-voltage circuits for household and similar purposes
- Part 2-1: Particular requirements for connecting devices as separate entities with screw -type
clamping units
IEC 60998-2-2, Connecting devices for low-voltage circuits for household and similar purposes
- Part 2-2: Particular requirements for connecting devices as separate entities with screwless -
type clamping units
IEC 61000-3-2:2018/AMD2:2024, Amendment 2 - Electromagnetic compatibility (EMC) - Part 3-
2: Limits - Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)
IEC 61000-4-2:2008, Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test
IEC 61000-4-2, Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test
IEC 61000-4-3, Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement
techniques - Radiated, radio-frequency, electromagnetic field immunity test

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IEC CDV 63418 ED1 © IEC 2025 13
IEC 61000-4-3:2020, Electromagnetic compatibility (EMC) - Part 4-3 : Testing and
measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test
IEC 61000-4-4:2012, Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst immunity test
IEC 61000-4-4, Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement
techniques - Electrical fast transient/burst immunity test
IEC 61000-4-5, Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement
techniques - Surge immunity test
IEC 61000-4-5:2014, Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement
techniques - Surge immunity test
IEC 61000-4-5:2014/AMD1:2017, Amendment 1 - Electromagnetic compatibility (EMC) - Part 4-
5: Testing and measurement techniques - Surge immunity test
IEC 61000-4-6, Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement
techniques - Immunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-4-6:2023, Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement
techniques - Immunity to conducted disturbances, induced by radio-frequency fields
IEC 61000-4-11, Electromagnetic compatibility (EMC) - Part 4-11: Testing and measurement
techniques - Voltage dips, short interruptions and voltage variations immunity tests for
equipment with input current up to 16 A per phase
IEC 61000-4-11:2020, Electromagnetic compatibility (EMC) - Part 4-11: Testing and
measurement techniques - Voltage dips, short interruptions and voltage variations immunity
tests for equipment with input current up to 16 A per phase
IEC 61032:1997, Protection of persons and equipment by enclosures - Probes for verification
IEC 61058 (all parts), Switches for appliances
IEC 62368-1:2023, Audio/video, information and communication technology equipment - Part
1: Safety requirements
IEC 62368-1:2023, Audio/video, information and communication technology equipment - Part
1: Safety requirements
IEC 62368-3:2017, Audio/video, information and communication technology equipment - Part
3: Safety aspects for DC power transfer through communication cables and ports
IEC 62479:2010, Assessment of the compliance of low-power electronic and electrical
equipment with the basic restrictions related to human exposure to electromagnetic fields (10
MHz to 300 GHz)
IEC 62680 (all parts), Universal serial bus interfaces for data and power
IEC 62680-1-2, Universal serial bus interfaces for data and power - Part 1-2: Common
components - USB Power Delivery specification
IEC 62680-1-3, Universal serial bus interfaces for data and power - Part 1-3: Common
components - USB Type-C® Cable and Connector Specification

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14 IEC CDV 63418 ED1 © IEC 2025
IEC 62911, Audio, video and information technology equipment - Routine electrical safety
testing in production
CISPR 32, Electromagnetic compatibility of multimedia equipment - Emission requirements
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
NOTE 1 Where the terms "voltage" and "current" are used, they imply RMS values, unless otherwise specified.
NOTE 2 Throughout this document the word "earthing" is used for "protective earthing" unless otherwise stated.
3.1
mounting box
box intended for mounting in or on a wall, floor or ceiling, etc., for flush or surface application,
intended for use with fixed accessory
3.2
terminal
insulated or non-insulated connecting device intended for reusable electrical connection of the
external conductors
3.3
clamping unit
part(s) of the terminal necessary for the mechanical clamping and the electrical connection of
the conductor(s), including the parts which are necessary to ensure correct contact pressure
[SOURCE: IEC 60050-442:1998, 442-06-12]
3.4
screw-type terminal
terminal for the connection and subsequent disconnection of one conductor or the
interconnection and subsequent disconnection of two or more conductors, the connection being
made, directly or indirectly, by means of screws or nuts of any kind
Note 1 to entry: Term entries pill
...