FprEN IEC 60598-2-24:2026

• Status: Not Published
• Publication Date: 06-Dec-2026
• ICS: 29.140.40 - Luminaires
• Technical Committee: CLC/TC 34 - 'Lamps and related equipment
• Current Stage: 5020 - Vote circulated - Formal Approval
• Start Date: 24-Jul-2026
• Due Date: 26-Dec-2025
• Completion Date: 24-Jul-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
• Ref Project: oSIST prEN IEC 60598-2-24:2024 - Luminaires - Part 2-24: Particular requirements - Luminaires with limited surface temperatures

• Revises: EN 60598-2-24:2013 - Luminaires - Part 2-24: Particular requirements - Luminaires with limited surface temperatures
• Effective Date: 28-Feb-2023

Overview

FprEN IEC 60598-2-24:2026 specifies the particular requirements for luminaires with limited surface temperatures. Developed by CLC under the IEC 60598 series, this international standard focuses on lighting equipment designed to minimize the risk of combustion from dust or accumulated material on luminaire surfaces. These luminaires are intended for use with electric light sources not exceeding 1,000 V and are designed to ensure safety, especially in environments prone to dust accumulation. The third edition of this standard introduces updated classifications, new marking requirements, and enhanced provisions for thermal protection.

Implementing this standard helps manufacturers ensure compliance with international safety requirements, while end-users benefit from reduced fire hazards in critical installations, such as industrial, agricultural, and dusty environments.

Key Topics

• Limited Surface Temperature: The core requirement is to restrict the surface temperature of luminaires to prevent ignition of combustible dusts and materials. This includes both normal and abnormal operating conditions.
• Dust Classification: Luminaires are classified according to the type of dust present (conductive or non-conductive), dictating the required ingress protection (IP) rating:
  • At least IP5X for non-conductive dust
  • IP6X for conductive dust
  • Minimum IP54 for fire-prone, dust-coated areas
• Markings and Instructions: Luminaires must be marked with a specific symbol for limited surface temperature and must provide clear instructions regarding intended locations, mounting positions, and surfaces requiring regular cleaning due to dust accumulation.
• Construction Requirements: Enclosures must provide the required degree of protection, including for internal light sources. Control gear and other built-in devices must be thermally protected to prevent excessive temperatures even under fault conditions.
• Thermal Testing: Comprehensive thermal and endurance tests are mandatory to verify that surface temperatures remain within prescribed limits during both typical (90°C on upward-facing surfaces) and fault scenarios (maximum 115°C).

Applications

Luminaires with limited surface temperatures are essential in environments where dust accumulation and combustible deposits present a fire risk. Application areas include:

• Industrial facilities: Factories, warehouses, and processing plants where dust from machinery or material handling can accumulate on equipment.
• Agricultural and horticultural premises: Locations with straw, chaff, or organic dust build-up.
• Public spaces and commercial buildings: Where fire safety is a priority and compliance with applicable wiring rules is required.
• Any installation governed by IEC 60364-4-42 or IEC 60364-7-705: Environments with enhanced risk of fire due to dust or where special requirements for luminaire placement exist.
• Retrofitting and upgrades: Existing installations seeking to comply with up-to-date safety standards for lighting equipment.

Related Standards

To ensure comprehensive safety and compliance, FprEN IEC 60598-2-24:2026 should be used in conjunction with related international standards, including:

• IEC 60598-1: General requirements and tests for all luminaires.
• IEC 60364-4-42: Safety provisions against thermal effects in electrical installations.
• IEC 60364-7-705: Requirements for electrical installations in agricultural and horticultural locations.
• ISO 4225: Definitions and terminology for air quality and dust.
• IEC 60050: International Electrotechnical Vocabulary (Electropedia) for standard definitions.

By following FprEN IEC 60598-2-24:2026, industry professionals ensure that luminaires are safer and suitable for use in challenging environments, reducing fire risk and supporting international best practices in lighting safety. This standard is a key reference for compliance, product development, and installation of luminaires where limited surface temperature is critical.

SLOVENSKI STANDARD
01-december-2024
Svetilke - 2-24. del: Posebne zahteve - Svetilke z omejeno površinsko temperaturo
Luminaires - Part 2-24: Particular requirements - Luminaires with limited surface
temperatures
Leuchten - Teil 2-24: Besondere Anforderungen - Leuchten mit begrenzter
Oberflächentemperatur
Luminaires - Partie 2-24: Exigences particulières - Luminaires avec surfaces à
températures limitées
Ta slovenski standard je istoveten z: prEN IEC 60598-2-24:2024
ICS:
29.140.40 Svetila Luminaires
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

34D/1745/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60598-2-24 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-10-18 2025-01-10
SUPERSEDES DOCUMENTS:
34D/1708/CD, 34D/1718A/CC
IEC SC 34D : LUMINAIRES
SECRETARIAT: SECRETARY:
United Kingdom Ms Shanti Conn
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
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:
Luminaires - Part 2-24: Particular requirements - Luminaires with limited surface temperatures

PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
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IEC 60598-2-24 © IEC 2024 2 34D/1745/CDV

1 INTERNATIONAL ELECTROTECHNICAL COMMISSION
2 ____________
4 LUMINAIRES –
5 Part 2-24: Particular requirements –
6 Luminaires with limited surface temperatures
7 FOREWORD
8 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
9 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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27 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
28 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
29 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
30 services carried out by independent certification bodies.
31 6) All users should ensure that they have the latest edition of this publication.
32 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
33 members of its technical committees and IEC National Committees for any personal injury, property damage or
34 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
35 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
36 Publications.
37 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
38 indispensable for the correct application of this publication.
39 9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
40 patent(s). IEC [takes no position concerning the evidence, validity or applicability of any claimed patent rights in
41 respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s),
42 which may be required to implement this document. However, implementers are cautioned that this may not
43 represent the latest information, which may be obtained from the patent database available at
44 https://patents.iec.ch. IEC shall not be held responsible for identifying any or all such patent rights.
46 IEC 60598-2-24 has been prepared by subcommittee 34D: Luminaires, of IEC technical committee
47 34: Lighting. It is an International Standard.
48 This third edition cancels and replaces the second edition,
49 published in 2013. This edition constitutes a technical revision.
51 This edition includes the following significant technical changes with respect to the previous edition:
52 a) the clause numbers and structure have been aligned with those of IEC 60598-1
53 b) improved terms and definitions
54 c) more detailed classification of luminaires
55 d) indication of luminaire mounting positions and use locations
56 e) thermal protection of built in control gear and other built-in devices required
58 The text of this International Standard is based on the following documents:

IEC 60598-2-24 © IEC 2024 3 34D/1745/CDV

Draft Report on voting
XX/XX/FDIS XX/XX/RVD
61 Full information on the voting for its approval can be found in the report on voting indicated in the
62 above table.
63 The language used for the development of this International Standard, Technical is English.
64 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
65 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, and the
66 ISO/IEC Directives, JTC 1 Supplement available at www.iec.ch/members_experts/refdocs. The main
67 document types developed by IEC are described in greater detail at www.iec.ch/publications.
69 This Part 2-24 is to be used in conjunction with the latest edition of IEC 60598-1 and its
70 amendment(s). It was established on the basis of the tenth edition (20XX) of that standard.
72 NOTE  When “Part 1” is mentioned in this document, it refers to IEC 60598-1.
74 Where this document states "addition", "modification" or "replacement", the relevant text of Part 1 is to
75 be adapted accordingly.
76 Subclauses, notes, figures and tables additional to those in Part 1 are numbered starting from 101;
77 supplementary annexes are entitled AAA, AAB, etc.
78 A list of all parts in the IEC 60598 series, published under the general title Luminaires can be found
79 on the IEC website.
80 The committee has decided that the contents of this document will remain unchanged until the
81 stability date indicated on the IEC website under webstore.iec.ch in the data related to the specific
82 document. At this date, the document will be
83 • reconfirmed,
84 • withdrawn,
85 • replaced by a revised edition, or
86 amended.
IEC 60598-2-24 © IEC 2024 4 34D/1745/CDV

88 LUMINAIRES –
89 Part 2-24: Particular requirements –
90 Luminaires with limited surface temperatures
91 1 Scope
92 This part of the IEC 60598 series specifies requirements for luminaires for which limited surface
93 temperatures are provided to counteract risks from combustible dusts (conductive or non-
94 conductive) or ignition of materials that can be deposited on luminaires. The luminaires are for
95 use with electric light sources on supply voltages not exceeding 1 000 V.
96 Note: The risk of thermal effects (combustion or degradation caused by the luminaire) to the mounting
97 surface is covered in Part 1 for all types of luminaires.
98 This document specifically excludes requirements for luminaires for use in explosive gas
99 atmospheres and explosive dust atmospheres.
100 2 Normative references
101 The following documents, in whole or in part, are normatively referenced in this document and
102 are indispensable for its application. For dated references, only the edition cited applies. For
103 undated references, the latest edition of the referenced document (including any amendments)
104 applies.
105 IEC 60364-4-42, Low-voltage electrical installations – Part 4-42: Protection for safety –
106 Protection against thermal effects
107 IEC 60364-7-705, Low-voltage electrical installations - Part 7-705: Requirements for special
108 installations or locations - Agricultural and horticultural premises
109 IEC 60598-1, Luminaires – Part 1: General requirements and tests
110 ISO 4225:1994, Air quality
...