SIST EN IEC 63545:2026

Horticultural lighting - Luminaires for horticultural lighting - Safety (IEC 63545:2026)

IEC 63545:2026 specifies safety requirements for horticultural luminaires, incorporating electric light sources for operation from supply voltage up to 1 000 V.

Pflanzenbaubeleuchtung - Leuchten für Pflanzenbaubeleuchtung - Sicherheit (IEC 63545:2026)

éclairage horticole - Luminaires pour éclairage horticole - Sécurité (IEC 63545:2026)

IEC 63545:2026 spécifie les exigences de sécurité relatives aux luminaires horticoles qui incorporent des sources de lumière électriques destinées à fonctionner avec une tension d'alimentation inférieure ou égale à 1 000 V.

Razsvetljava za hortikulturo - Svetilke za hortikulturno razsvetljavo - Varnost (IEC 63545:2026)

IEC 63545:2026 določa varnostne zahteve za hortikulturne svetilke, ki vključujejo električne svetlobne vire za delovanje pri napetosti do 1 000 V.

General Information

• Status: Published
• Public Enquiry End Date: 20-Mar-2025
• Publication Date: 17-Jun-2026
• ICS: 29.140.40 - Luminaires
• ICS: 65.060.70 - Horticultural equipment
• Technical Committee: STV - Steklo, svetloba in razsvetljava v gradbeništvu
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 14-Apr-2026
• Due Date: 19-Jun-2026
• Completion Date: 18-Jun-2026
• Directive: Harmonized Standard2014/35/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
• Ref Project: EN IEC 63545:2026 - Horticultural lighting - Luminaires for horticultural lighting - Safety

Relations

• Refers: SIST EN IEC 60598-2-2:2024 - Luminaires - Part 2-2: Particular requirements - Recessed luminaires and recessed air-handling luminaires (IEC 60598-2-2:2023)
• Effective Date: 24-Mar-2026
• Refers: SIST EN IEC 60598-1:2025 - Luminaires - Part 1: General requirements and tests (IEC 60598-1:2024)
• Effective Date: 24-Mar-2026
• Refers: SIST EN 60598-2-5:2016 - Luminaires - Part 2-5: Particular requirements - Floodlights (IEC 60598-2-5:2015)
• Effective Date: 24-Mar-2026
• Refers: SIST EN IEC 62471-7:2023 - Photobiological safety of lamps and lamp systems - Part 7: Light sources and luminaires primarily emitting visible radiation (IEC 62471-7:2023)
• Effective Date: 24-Mar-2026
• Refers: SIST EN IEC 60068-2-11:2021 - Environmental testing - Part 2-11: Tests - Test Ka: Salt mist (IEC 60068-2-11:2021)
• Effective Date: 24-Mar-2026
• Refers: oSIST prEN IEC 60598-2-1:2024 - Luminaires - Part 2-1: Particular requirements - Fixed general purpose luminaires
• Effective Date: 24-Mar-2026
• Refers: SIST EN IEC 60598-2-20:2024 - Luminaires - Part 2-20: Particular requirements - Lighting chains (IEC 60598-2-20:2022)
• Effective Date: 24-Mar-2026
• Refers: SIST EN 60598-2-21:2015 - Luminaires - Part 2-21: Particular requirements - Sealed lighting chains
• Effective Date: 24-Mar-2026
• Refers: SIST EN IEC 60730-1:2025 - Automatic electrical controls - Part 1: General requirements
• Effective Date: 24-Mar-2026
• Refers: SIST EN 62471:2008 - Photobiological safety of lamps and lamp systems (IEC 62471:2006, modified)
• Effective Date: 24-Mar-2026
• Refers: SIST EN 60598-2-4:2018 - Luminaires - Part 2: Particular requirements - Section 4: Portable general purpose luminaires (IEC 60598-2-4:2017)
• Effective Date: 24-Mar-2026

Overview

SIST EN IEC 63545:2026 – Horticultural lighting – Luminaires for horticultural lighting – Safety is a European standard developed by CLC, adopting the international IEC 63545:2026 standard. This document specifies comprehensive safety requirements for horticultural luminaires operating at supply voltages up to 1,000 V. Focusing on horticultural lighting, the standard addresses the unique operational and environmental demands of equipment used to promote plant growth both indoors and in greenhouses, as well as other controlled environments. By implementing these safety requirements, manufacturers and users can minimize risks related to electric shock, photobiological hazards, dust and moisture ingress, and other specific concerns in horticultural applications.

Key Topics

• Safety Requirements for Horticultural Luminaires
  • Defines additional and deviated requirements compared to general-purpose luminaires.
  • Addresses protection against dust, moisture, and saline environments common in horticulture.
• Photobiological Safety
  • Specifies assessment procedures for photobiological risks such as UV and blue-light hazards.
  • Requires classification and marking of luminaires based on photobiological risk groups.
• Marking and Labelling
  • Details mandatory labels for risk groups, including required safety symbols and warning statements.
  • Ensures visibility and comprehension for installation and maintenance personnel.
• Instruction Manuals
  • Outlines essential information for safe operation, installation, and maintenance.
  • Emphasizes photobiological hazards and provides operational guidance for daily exposure limits.
• Environmental Resistance
  • Sets minimum Ingress Protection (IP) ratings for luminaires depending on their intended use:
    • At least IP65 for industrial/professional use; IP66 for inter-plant lighting; IP44 for household use.
  • Includes resistance to salt mist and requirements for withstanding high-humidity or corrosive environments.
• Electrical and Construction Provisions
  • Requirements for earthing, insulation resistance, protection against electric shock, and safe electrical connections.
  • Endurance and thermal tests to ensure safe operation, including temperature limitations for external surfaces.

Applications

SIST EN IEC 63545:2026 is applicable in various horticultural lighting scenarios, where luminaires are designed to directly influence plant biology through artificial lighting. Typical applications include:

• Greenhouses: Ensures that luminaires installed in humid, potentially corrosive environments meet stringent safety and durability standards.
• Plant Factories and Indoor Farms: Addresses the needs of high-density plant production with rigorous protection against dust, water, and human exposure.
• Research Institutions: Supplies standardized safety guidelines for controlled studies on plant growth and photobiological effects.
• Home and Consumer Horticulture: Provides a safety baseline for luminaires used in residential settings, ensuring minimal risk to ordinary users.
• Industrial and Professional Installations: Mandates higher IP ratings and professional supervision for luminaires used in large-scale or technically demanding settings.

This standard supports manufacturers, facility managers, and safety engineers in designing, selecting, and installing safe horticultural lighting systems.

Related Standards

To achieve full compliance, SIST EN IEC 63545:2026 is used alongside several related international standards, including:

• IEC 60598-1: Luminaires - General requirements and tests.
• IEC 60598-2 Series: Particular requirements for various luminaire types (fixed, recessed, portable, floodlights, rope lights, lighting chains).
• IEC 62471 and IEC 62471-7: Photobiological safety of lamps and lamp systems.
• IEC 60068-2-11: Environmental testing - Salt mist resistance.
• IEC 60730-1: Automatic electrical controls – General requirements.

SIST EN IEC 63545:2026 ensures that horticultural luminaires are safe, reliable, and suitable for the demanding conditions unique to plant cultivation. Adhering to this standard not only helps with regulatory compliance but also promotes user and plant safety and supports robust product performance in the fast-growing horticultural lighting market.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2026
Vrtnarska razsvetljava - Svetilke za vrtnarsko razsvetljavo - Varnost (IEC
63545:2026)
Horticultural lighting - Luminaires for horticultural lighting - Safety (IEC 63545:2026)
Pflanzenbaubeleuchtung - Leuchten für Pflanzenbaubeleuchtung - Sicherheit (IEC
63545:2026)
éclairage horticole - Luminaires pour éclairage horticole - Sécurité (IEC 63545:2026)
Ta slovenski standard je istoveten z: EN IEC 63545:2026
ICS:
29.140.40 Svetila Luminaires
65.060.70 Vrtnarska oprema Horticultural equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63545

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2026
ICS 29.140.40
English Version
Horticultural lighting - Luminaires for horticultural lighting - Safety
(IEC 63545:2026)
Éclairage horticole - Luminaires pour éclairage horticole - Pflanzenbaubeleuchtung - Leuchten für
Sécurité Pflanzenbaubeleuchtung - Sicherheit
(IEC 63545:2026) (IEC 63545:2026)
This European Standard was approved by CENELEC on 2026-03-30. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63545:2026 E
European foreword
The text of document 34/1419/FDIS, future edition 1 of IEC 63545, prepared by TC 34 "Lighting" was
submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN IEC 63545:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-04-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-04-30
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a standardization request addressed to CENELEC by the
European Commission. The Standing Committee of the EFTA States subsequently approves these
requests for its Member States.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63545:2026 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 60127-1 NOTE Approved as EN IEC 60127-1
IEC 60364-7-705 NOTE Approved as HD 60364-7-705
IEC 60730-2-9 NOTE Approved as EN IEC 60730-2-9
IEC 60812 NOTE Approved as EN IEC 60812
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-11 - Environmental testing - Part 2-11: Tests - EN IEC 60068-2-11 -
Test Ka: Salt mist
IEC 60598-1 2024 Luminaires - Part 1: General requirements EN IEC 60598-1 2024
and tests
IEC 60598-2-1 - Luminaires - Part 2-1: Particular - -
requirements - Fixed general purpose
luminaires
IEC 60598-2-2 - Luminaires - Part 2-2: Particular EN IEC 60598-2-2 -
requirements - Recessed luminaires and
recessed air-handling luminaires
IEC 60598-2-4 - Luminaires - Part 2-4: Particular EN 60598-2-4 -
requirements - Portable general purpose
luminaires
IEC 60598-2-5 - Luminaires - Part 2-5: Particular EN 60598-2-5 -
requirements - Floodlights
IEC 60598-2-20 - Luminaires - Part 2-20: Particular EN IEC 60598-2-20 -
requirements - Lighting chains
IEC 60598-2-21 - Luminaires - Part 2-21: Particular EN 60598-2-21 -
requirements - Rope lights
IEC 60730-1 2022 Automatic electrical controls - Part 1: EN IEC 60730-1 2024
General requirements
IEC 62471 2006 Photobiological safety of lamps and lamp EN 62471 2008
systems
IEC 62471-7 2023 Photobiological safety of lamps and lamp EN IEC 62471-7 2023
systems - Part 7: Light sources and
luminaires primarily emitting visible
radiation
IEC 63545 ®
Edition 1.0 2026-02
INTERNATIONAL
STANDARD
Horticultural lighting - Luminaires for horticultural lighting - Safety

ICS 29.140.40  ISBN 978-2-8327-1080-7

IEC 63545:2026-02(en)
IEC 63545:2026 © IEC 2026
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General requirements . 9
5 Classification of horticultural luminaires . 9
5.1 General . 9
5.2 Intended use classification . 9
5.3 Installation classification . 10
6 Marking . 10
6.1 General . 10
6.2 Marking on horticultural luminaires . 10
6.3 Instruction manual . 10
6.3.1 Safety instructions . 10
6.3.2 Operating conditions . 11
6.3.3 Symbols and labels . 11
6.3.4 Photobiological hazard information . 11
7 Construction . 11
7.1 General . 11
7.2 IP rating . 11
7.3 Environmental conditions . 12
7.4 Photobiological hazards . 12
7.4.1 General . 12
7.4.2 Horticultural luminaires without restriction for use . 12
7.4.3 Horticultural luminaires for industrial or professional use only . 13
7.5 Replaceable source . 13
8 External and internal wiring . 14
9 Provision for earthing . 14
10 Protection against electric shock . 14
11 Resistance to dust, solid objects and moisture . 14
12 Insulation resistance and electric strength, touch current and protective conductor
current . 14
13 Creepage distances and clearances . 14
14 Endurance test and thermal test . 14
15 Resistance to heat, fire and tracking . 14
16 Screw terminals . 14
17 Screwless terminals and electrical connections . 14
Annex A (normative) Photobiological hazard related risk group labelling . 15
A.1 General . 15
A.2 Exempt Group (RG0) . 17
A.3 Risk Group 1 (RG1), Risk Group 2 (RG2) and Risk Group 3 (RG3) . 17
Annex B (normative) Safety-related electronic circuit (SREC) requirements . 19
B.1 General . 19
IEC 63545:2026 © IEC 2026
B.2 Reliability evaluation . 19
B.2.1 General . 19
B.2.2 Test conditions . 19
B.2.3 Requirements related to functional safety . 20
B.3 Design review . 20
Bibliography . 22

Figure A.1 – Skeleton of the label . 15
Figure A.2 – Symbol 1 – Ultraviolet radiation, instructional safeguard . 15
Figure A.3 – Symbol 2 – Do not stare at source . 15
Figure A.4 – Symbol 3 – Caution, infrared radiation . 16
Figure A.5 – Example of horticultural luminaire label for RG 1 due to UV hazard . 18
Figure A.6 – Example of horticultural luminaire label for RG 2 due to UV hazard . 18
Figure A.7 – Example of horticultural luminaire label for RG 2 exceeding blue light
hazard level BLH-B as specified by IEC 62471-7 . 18
Figure A.8 – Example of horticultural luminaire label for RG 2 due to UV hazard and IR
hazard . 18

Table A.1 – Hazard-related risk group labelling . 16
Table A.2 – Explanation of labelling information and guidance on control measures . 17

IEC 63545:2026 © IEC 2026
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Horticultural lighting -
Luminaires for horticultural lighting - Safety

FOREWORD
1) 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
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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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. 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 IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 63545 has been prepared by IEC technical committee 34: Lighting. It is an International
Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
34/1419/FDIS 34/1432/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.
IEC 63545:2026 © IEC 2026
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 www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
This document is to be used in conjunction with the relevant corresponding document of the
IEC 60598-2 series for general lighting purpose, as follows:
– IEC 60598-2-1 Fixed general purpose luminaires, or
– IEC 60598-2-2 Recessed luminaires, or
– IEC 60598-2-4 Portable general purpose luminaires, or
– IEC 60598-2-5 Floodlights, or
– IEC 60598-2-20 Lighting chains, or
– IEC 60598-2-21 Rope lights.
Note that for each particular use case and for the purposes of this document, one single relevant
reference document from the IEC 60598-2 series shall be applied, and no mixing between the
various documents in the IEC 60598-2 series shall occur.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
IEC 63545:2026 © IEC 2026
INTRODUCTION
This document acknowledges the need for safety specifications for horticultural luminaires,
which are considered as additional requirements or different requirements when comparing with
the similar type of luminaires used for general lighting purposes.
Compared with the safety requirements for general lighting purpose luminaires, the differences
for horticultural luminaires are mainly derived based on the following considerations:
– change of environmental conditions for the application: Horticultural luminaires are normally
used indoors, but with the purpose of horticulture cultivation, the environmental conditions
are normally severe.
– change of application purpose from vision sensation to horticulture use. Photobiological
safety requirements and UV resistance requirements are developed based on this change
in application purposes.
The provisions in this document represent the technical knowledge of experts from the field of
horticultural lighting and are developed in close context with IEC 60598-1 and the
corresponding document of the IEC 60598-2 series.

IEC 63545:2026 © IEC 2026
1 Scope
This document specifies safety requirements for horticultural luminaires, incorporating electric
light sources for operation from supply voltage up to 1 000 V.
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 60068-2-11, Environmental testing - Part 2-11: Tests - Test Ka: Salt mist
IEC 60598-1:2024, Luminaires - Part 1: General requirements and tests
IEC 60598-2-1, Luminaires - Part 2-1: Particular requirements - Fixed general purpose
luminaires
IEC 60598-2-2, Luminaires - Part 2-2: Particular requirements - Recessed luminaires and
recessed air-handling luminaires
IEC 60598-2-4, Luminaires - Part 2-4: Particular requirements - Portable general purpose
luminaires
IEC 60598-2-5, Luminaires - Part 2-5: Particular requirements - Floodlights
IEC 60598-2-20, Luminaires - Part 2-20: Particular requirements - Lighting chains
IEC 60598-2-21, Luminaires - Part 2-21: Particular requirements - Rope lights
IEC 60730-1:2022, Automatic electrical controls - Part 1: General requirements
IEC 62471:2006, Photobiological safety of lamps and lamp systems
IEC 62471-7:2023, Photobiological safety of lamps and lamp systems - Part 7: Light sources
and luminaires primarily emitting visible radiation
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60598-1, and
IEC 60598-2-1, or IEC 60598-2-2, or IEC 60598-2-4, or IEC 60598-2-5, or IEC 60598-2-20, or
IEC 60598-2-21, and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
– IEC Electropedia: available at https://www.electropedia.org/
– ISO Online browsing platform: available at https://www.iso.org/obp
IEC 63545:2026 © IEC 2026
3.1
horticultural lighting
application of optical radiation to stimulate biological response of plants and the plant tissues
Note 1 to entry: Examples of the application scenarios are plant factory, greenhouse, field application and home
application.
Note 2 to entry: Examples of the application manners are top lighting and inter-plant lighting.
3.2
inter-plant lighting
horticultural lighting applied among the foliage of plants
Note 1 to entry: Supplemental inter-plant lighting is normally used in greenhouses.
3.3
horticultural luminaire
luminaire designed to incorporate sources of optical radiation for horticultural lighting
3.4
skilled person
person with relevant education and experience to enable him or her
to perceive risks and to avoid photobiological hazards
3.5
instructed person
person advised or supervised by optical radiation skilled persons to
enable him or her to perceive risks and to avoid photobiological hazards
3.6
ordinary person
person who is neither a skilled person nor an instructed person
[SOURCE: IEC 60050-195:2021,195-04-03]
3.7
industrial and professional use
use intended only for skilled or instructed persons
[SOURCE: IEC 60050-851:2008, 851-11-12, modified – the word "experts" has been replaced
by "skilled".]
3.8
without restriction for use
use applicable for skilled persons, instructed persons, and also ordinary persons
IEC 63545:2026 © IEC 2026
3.9
critical control function
function performed by a discrete component or a component network whose primary purpose
is to allow the luminaire to be in compliance with the maximum allowed emission, but whose
failure could cause the luminaire to exceed the exposure limits for normal operation
EXAMPLE A function that controls the on-state or maintains the duty cycle of a source, where a circuit fault causes
the source to unexpectedly energize or to emit higher doses that what is permissible.
[SOURCE: UL 8802:2023, B2.2, modified – "normal operation of the product" has been replaced
by "to allow the luminaire to be in compliance with the maximum allowed emission", and the
wording "the device to exceed the electrical, thermal or exposure limits for normal operation
defined in this standard and the additional safety standards that apply to the product; see 1.7"
has been replaced by "the luminaire to exceed the exposure limits for normal operation".]
3.10
critical failure mode
software or hardware fault which can result in a risk
[SOURCE: UL 8802:2023, B2.3, modified – the word in brackets "(mode)" in the term name has
been replaced by "mode", and the word "a" in the beginning of the definition has been removed.]
3.11
protective component
discrete component or component network that has been separately evaluated to reliably
perform a protective function
EXAMPLE Such components include thermal protectors evaluated in accordance with IEC 60730-2-9 and fuses
evaluated in accordance with IEC 60127.
[SOURCE: UL 8802:2023, B2.6, modified – the example has been moved to EXAMPLE; "to
UL 60730-2-9" and "to the UL 248, series of standards" have been replaced by "in accordance
with IEC 60730-2-9" and "in accordance with IEC 60127".]
3.12
protective function
function that operates after the occurrence of a failure in the equipment so as to prevent harm
to persons or damage to property
[SOURCE: IEC 60050-904:2014, 904-03-05, modified – Note 1 to entry and Note 2 to entry
have been removed.]
3.13
safety-related software
software that is used to implement safety functions
[SOURCE: IEC TS 63394:2023, 3.1.53, modified – "in a safety-related system" is removed from
the definition.]
IEC 63545:2026 © IEC 2026
3.14
safety-related electronic circuit
SREC
electronic circuit that implements one or more control or protective functions
Note 1 to entry: Safety-related electronic circuits can incorporate any combination of active, passive,
programmable, and protective components or semiconductors.
[SOURCE: UL 8802:2023, B2.10, modified – "SREC" has been added as the abbreviated term,
the example in the definition has been changed to a note to entry and the wording "These
circuits may" has been replaced by "Note 1 to entry: Safety-related electronic circuits can".]
4 General requirements
Requirements given in this document are additional to the requirements given in the relevant
corresponding document of the IEC 60598-2 series for general lighting purpo
...