prEN IEC 63560:2026

• Status: Not Published
• Publication Date: 02-Mar-2028
• Technical Committee: CLC/TC 34 - 'Lamps and related equipment
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 07-Aug-2026
• Due Date: 31-Mar-2026
• Completion Date: 07-Aug-2026
• 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
• Ref Project: oSIST prEN IEC 63560:2026 - Germicidal equipment - Excimer sources - Safety

Overview

prEN IEC 63560:2026, Germicidal equipment - Excimer sources - Safety is a proposed international standard developed by IEC Technical Committee 34 (Lighting) and adopted by CENELEC. This standard addresses the safety requirements for germicidal equipment utilizing excimer sources, which are increasingly used for ultraviolet (UV) disinfection and sterilization in various environments. Excimer sources, including the emerging 222 nm lamps, generate UV radiation effective against pathogens, making equipment safety critical for end-users and maintenance personnel.

Adhering to this standard ensures that excimer-based germicidal equipment is designed, constructed, and marked for safe usage, covering aspects such as electrical safety, thermal resistance, UV and ozone hazard management, and material endurance.

Key Topics

• Scope: Defines safety requirements for excimer sources operated by electronic control gear for use with DC supplies up to 1,500 V or AC up to 1,000 V at 50/60 Hz.
• Marking and Labelling: Specifies mandatory markings on both the excimer sources and packaging or technical literature. Includes manufacturer details, warnings about UV and ozone hazards, and relevant operational data.
• Electrical Safety: Covers insulation resistance, electric strength, minimum required creepage distances, and clearances - essential for preventing electric shock and ensuring reliable operation.
• Thermal Safety: Requires resistance to heat and flame, including preconditioning tests and glow-wire testing at specified temperatures to ensure insulation integrity.
• UV and Ozone Safety: Establishes limits for UV emission categorized by risk groups (according to IEC 62471) and maximum allowed ozone generation rates, with prescribed measurement and labeling methods.
• Material Durability: Mandates that materials exposed to UV-C and ozone must withstand specified levels without significant degradation, ensuring product longevity and user safety.
• Design Information: Provides guidance for equipment and luminaire designers regarding temperature management, safety interlocks, protection from water ingress, and implementation of engineering controls to mitigate UV hazard.

Applications

This standard is especially relevant for:

• Manufacturers of germicidal UV-C equipment, including excimer lamps and sterilizing luminaires.
• Healthcare settings, such as hospitals and clinics, where UV disinfection is widely used.
• Water and air purification systems utilizing excimer sources for improved sterilization.
• Laboratories and research facilities employing UV germicidal technology for biosafety.
• Public and commercial buildings integrating germicidal UV equipment for improved indoor hygiene.

Complying with prEN IEC 63560:2026 enhances the safety, reliability, and regulatory acceptance of products within global markets, and helps protect users against UV and ozone hazards associated with excimer-based germicidal equipment.

Related Standards

When applying or referencing prEN IEC 63560:2026, the following international standards are particularly relevant:

• IEC 62471: Photobiological safety of lamps and lamp systems
• IEC 61032:1997: Protection of persons and equipment by enclosures - Probes for verification
• IEC 60695-2-10: Fire hazard testing - Glow-wire apparatus and common test procedure
• IEC 62368-1:2023: Audio/video, information and communication technology equipment - Safety requirements
• IEC 60243 (all parts): Electric strength of insulating materials - Test methods
• IEC 63561: Measurement of ozone production from UV-C radiation sources and luminaires (in development)
• ISO 1431-1:2024: Rubber, vulcanized or thermoplastic - Resistance to ozone cracking
• ISO 527 & ISO 178: Determination of tensile and flexural properties of plastics

Following these standards in conjunction ensures comprehensive safety management for excimer germicidal equipment from design through to end-use.

---

Keywords: prEN IEC 63560:2026, excimer sources, germicidal equipment, UV-C safety, ozone, sterilization, IEC standards, electrical safety, CENELEC, UV disinfection, material durability, marking requirements, compliance

SLOVENSKI STANDARD
01-oktober-2026
Germicidna oprema - Ekscimerni viri - Varnost
Germicidal equipment - Excimer sources - Safety
Ta slovenski standard je istoveten z: prEN IEC 63560:2026
ICS:
11.080.10 Sterilizacijska oprema Sterilizing equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

34/1461/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 63560 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2026-08-07 2026-10-30
SUPERSEDES DOCUMENTS:
34/1423/CD, 34/1445/CC
IEC TC 34 : LIGHTING
SECRETARIAT: SECRETARY:
United Kingdom Mr Petar Luzajic
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:
Germicidal equipment - Excimer sources - Safety

PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
As agreed, the title has been changed from "Excimer sources for germicidal purpose - Safety
specifications" to "Germicidal equipment - Excimer sources - Safety".

download this electronic file, to make a copy and to print out the content for the sole purpose of preparing National
Committee positions. You may not copy or "mirror" the file or printed version of the document, o r any part of it,
for any other purpose without permission in writing from IEC.

IEC CDV 63560 © IEC 2026
1 CONTENTS
3 FOREWORD . 2
4 INTRODUCTION . 4
5 1 Scope . 5
6 2 Normative references . 5
7 3 Terms and definitions . 5
8 4 General requirements . 5
9 5 Marking . 6
10 5.1 Marking on the excimer source . 6
11 5.2 Marking on the packing or in the technical literature . 6
12 6 Electric safety . 7
13 6.1 Insulation resistance. 7
14 6.2 Electric strength . 8
15 6.3 Creepage distance and clearance. 8
16 6.4 Reduced values for functional insulation . 12
17 6.5 Accessible parts . 12
18 7 Thermal safety . 12
19 7.1 General . 12
20 7.2 Resistance to heat . 12
21 7.3 Resistance to flame . 13
22 8 Resistance to UV radiation and ozone exposure . 13
23 8.1 Risk group of actinic UV hazard . 13
24 8.2 Ozone generation rate . 13
25 8.3 Resistance to UV radiation and ozone exposure . 13
26 Annex A (informative) Drawings of excimer sources . 15
27 Annex B (informative) Information for luminaire design . 16
28 B.1 Maximum excimer source temperature . 16
29 B.2 Openings, panels and doors . 16
30 B.3 UV radiation . 16
31 B.4 Water contact . 16
IEC CDV 63560 © IEC 2026
37 INTERNATIONAL ELECTROTECHNICAL COMMISSION
38 ____________
40 Germicidal equipment - Excimer sources - Safety
42 FOREWORD
43 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
44 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
45 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
46 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
47 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
48 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
49 may participate in this preparatory work. International, governmental and non-governmental organizations liaising
50 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
51 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
52 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
53 consensus of opinion on the relevant subjects since each technical committee has representation from all
54 interested IEC National Committees.
55 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
56 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
57 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
58 misinterpretation by any end user.
59 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
60 transparently to the maximum extent possible in their national and regional publications. Any divergence between
61 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
62 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
63 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
64 services carried out by independent certification bodies.
65 6) All users should ensure that they have the latest edition of this publication.
66 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
67 members of its technical committees and IEC National Committees for any personal injury, property damage or
68 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
69 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
70 Publications.
71 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
72 indispensable for the correct application of this publication.
73 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
74 rights. IEC shall not be held responsible for identifying any or all such patent rights.
75 IEC 63560 has been prepared by IEC technical committee 34: Lighting. It is an International
76 Standard.
77 The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
79 Full information on the voting for its approval can be found in the report on voting indicated in
80 the above table.
81 The language used for the development of this International Standard is English.
82 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
83 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
84 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
85 described in greater detail at www.iec.ch/publications.
86 The committee has decided that the contents of this document will remain unchanged until the
87 stability date indicated on the IEC website under webstore.iec.ch in the data related to the
88 specific document. At this date, the document will be
IEC CDV 63560 © IEC 2026
89 • reconfirmed,
90 • withdrawn,
91 • replaced by a revised edition, or
92 • amended.
IEC CDV 63560 © IEC 2026
94 INTRODUCTION
95 This document acknowledges the emerging of 222 nm excimer sources for germicidal purpose
96 and the need for the safety specification.
97 The provisions in this document represent the technical knowledge of experts from the field of
98 the UV radiation for germicidal purpose, and are developed with the safety of other type s of UV
99 radiation sources for germicidal purpose, e.g., low pressure mercury sources for germicidal
100 purpose.
101 As a product safety document, it is not necessary to limit the wavelength to be only for 222nm.
102 “Excimer source” without wavelength limitation is then used for the purpose of this document.
IEC CDV 63560 © IEC 2026
104 Germicidal equipment - Excimer sources - Safety
106 1 Scope
107 This document specifies safety requirements for excimer sources operated by electronic
108 controlgear for use on DC supplies up to 1 500 V or on AC supplies up to 1 000 V at 50 Hz or
109 60 Hz used for germicidal purposes.
110 2 Normative references
111 The following documents are referred to in the text in such a way that some or all of their content
112 constitutes requirements of this document. For dated references, only the edition cited applies.
113 For undated references, the latest edition of the referenced document (including any
114 amendments) applies.
115 IEC 60243 (all parts), Electric strength of insulating materials - Test methods
116 IEC 60695-2-10, Fire hazard testing - Part 2-10: Glowing/hot-wire based test methods -
117 Glow-wire apparatus and common test procedure
118 IEC 61032:1997, Protection of persons and equipment by enclosures - Probes for
119 verification
120 IEC 62471, Photobiological safety of lamps and lamp systems
121 IEC 62368-1:2023 Audio/video, information and communication technology equipment -
122 Part 1: Safety requirements
123 IEC 63561, Measurement of ozone production from UV-C radiation sources and luminaires
124 ISO 1431-1:2024, Rubber, vulcanized or thermoplastic — Resistance to ozone cracking —
125 Part 1: Static and dynamic strain testing
126 ISO 178, Plastics — Determination of tensile properties
127 ISO 527 (all parts), Plastics — Determination of flexural properties
128 3 Terms and definitions
129 For the purposes of this document, the terms and definitions given in IEC 60050-845, and the
130 following apply.
131 ISO and IEC maintain terminology databases for use in standardization at the following
132 addresses:
133 • ISO Online browsing platform: available at https://www.iso.org/obp
134 • IEC Electropedia: available at https://www.electropedia.org
135 3.1
136 excimer source
137 radiation source based on dielectric barrier discharge through a noble gas containing excited
138 dimeric molecules
139 Note 1 to entry: Examples of excimer source designs are given in Annex A.
140 Note 2 to entry: Examples of excimer lamps are KrCl or KrBr excimer lamps.
141 4 General requirements
142 Excimer sources shall be designed and constructed so that when used as intended they present
143 no danger to the user or the surroundings.
IEC CDV 63560 © IEC 2026
144 Compliance is checked by carrying out the tests specified in this document with the excimer
145 source powered by the designated type of controlgear by the manufacturer or responsible
146 vendor.
147 Note Information for luminaire design is given in Annex B.
148 5 Marking
149 5.1 Marking on the excimer source
150 The following information shall be legibly and durably marked on the excimer source:
151 a) mark of origin;
152 NOTE This can take the form of a trademark, the name of the manufacturer or the responsible vendor
153 b) model number or type reference of the manufacturer;
154 c) UV hazard warning given in Figure 1;
159 (IEC 60417-6040:2010-08-27)
160 Figure 1 –UV hazard symbol
162 d) risk group of the actinic UV hazard according to IEC 62471;
163 Compliance is checked by the following:
164 – Presence and legibility of the marking is checked by visual inspection；
165 – The durability of the marking is checked by trying to remove it by rubbing lightly for 15 s
166 with a piece of cloth soaked with water. The marking on the excimer source shall remain
167 legible and correctly positioned after the test.
168 5.2 Marking on the packing or in the technical literature
169 The following information shall be given on the packing or in the instructions for use:
170 a) risk group of the actinic UV hazard according to IEC 62471;
171 b) instructional safeguards “WARNING: Turn off the source before opening or removing any
172 shielding” and “WARNING: Use UV radiation personal protective equipment (PPE) such as
173 eye and skin protection during use, maintenance and servicing”;
174 c) procedures to be used by persons other than a qualified agent；
175 d) warning label as specified in IEC 63535 according to the risk group of the excimer source;
176 e) the cap design, if applic
...