SIST EN ISO 8846:2026
(Main)Small craft - Electrical devices - Protection against ignition of surrounding flammable gases (ISO 8846:2025)
Small craft - Electrical devices - Protection against ignition of surrounding flammable gases (ISO 8846:2025)
This document specifies test methods and requirements for the design of electrical devices, when under normal operating conditions, on small craft so that they can be operated without igniting a surrounding flammable gas atmosphere.
This document does not apply to ignition protection procedures for:
— devices or components that can operate in hydrogen and air mixtures;
— devices with dysfunctional issues;
— mechanisms of ignition from external sources, such as static electricity, lightning or other factors not related to the equipment under test.
Kleine Wasserfahrzeuge - Elektrische Geräte - Zündschutz gegenüber entflammbaren Gasen (ISO 8846:2025)
Dieses Dokument legt Prüfverfahren und Anforderungen für die Auslegung von elektrischen Geräten unter normalen Betriebsbedingungen zur Verwendung auf kleinen Wasserfahrzeugen fest, so dass diese betrieben werden können, ohne eine Umgebungsatmosphäre mit entflammbarem Gas zu entzünden.
Dieses Dokument gilt nicht für Zündschutzverfahren für:
Geräte oder Komponenten, die in Wasserstoff- und Luftgemischen betrieben werden können;
Geräte mit Fehlfunktionsproblemen;
Mechanismen zur Zündung durch externe Quellen, etwa statische Elektrizität, Blitze oder andere Faktoren, die nicht mit dem zu prüfenden Gerät in Beziehung stehen.
Petits navires - Appareils électriques - Protection contre l’inflammation des gaz inflammables environnants (ISO 8846:2025)
Le présent document spécifie des méthodes d’essai et des exigences relatives à la conception des appareils électriques qui, dans des conditions normales de fonctionnement, sont utilisés sur les petits navires de manière à ce qu’ils puissent fonctionner sans enflammer une atmosphère de gaz inflammables environnants.
Le présent document ne s’applique pas aux modes opératoires de protection contre l’inflammation:
— des appareils ou des éléments qui peuvent fonctionner dans des mélanges d’hydrogène et d’air;
— des appareils qui rencontrent des problèmes de dysfonctionnement;
— des mécanismes d’inflammation par des sources extérieures du type électricité statique, foudre ou autres facteurs non liés à l’appareil soumis à essai.
Mala plovila - Električne naprave - Varovanje pred vžigom gorljivih plinov v okolici (ISO 8846:2025)
General Information
- Status
- Published
- Public Enquiry End Date
- 07-May-2024
- Publication Date
- 24-Mar-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 09-Mar-2026
- Due Date
- 14-May-2026
- Completion Date
- 25-Mar-2026
Relations
- Effective Date
- 04-Mar-2026
- Effective Date
- 04-Mar-2026
- Effective Date
- 21-Jun-2023
Overview
The kSIST FprEN ISO 8846:2025 standard, titled Small craft - Electrical devices - Protection against ignition of surrounding flammable gases (ISO/FDIS 8846:2025), is an essential international guideline developed by the International Organization for Standardization (ISO) and the European Committee for Standardization (CEN). This standard specifies rigorous test methods and design requirements for electrical devices installed on small craft-recreational boats and similar watercraft up to 24 meters in hull length-to prevent ignition of flammable gas mixtures in the surrounding environment under normal operating conditions.
By following ISO 8846, manufacturers and engineers ensure their electrical equipment does not pose explosion risks due to sparks, arcs, or excessive surface temperatures in atmospheres that may contain flammable gases, such as propane-air mixtures commonly found in marine fuel systems.
Key Topics
Scope and Applicability:
The standard covers electrical devices that may generate ignition sources during normal use, including switches, relays, cranking motors, alternators, and distributors on small craft. It excludes devices designed for hydrogen-air mixtures, those with functional defects, and external ignition sources like static electricity or lightning.Test Methods:
- Surface Temperature Test: Ensures devices operate below a maximum external surface temperature of 200 °C, preventing thermal ignition of gases.
- Sealed Device Testing: Uses water submersion tests to verify hermetic sealing that prevents gas ingress and sparking risks inside the device.
- Non-Sealed Device Testing: Employs a propane-air atmosphere in controlled chambers with continuous monitoring to detect any ignition caused by arcs or sparks within the device.
Definitions:
Key terms are defined, such as “flammable hydrocarbon mixture” (propane and air blends between lower and upper flammable limits), "ignition-protected device," and "normal operating conditions" (including overloads up to 400% rated current and stalled rotor situations).Marking Requirements:
The standard specifies marking protocols that help identify devices tested and certified for ignition protection, aiding compliance and safety verification.Updates:
This latest edition revises scope clarity, updates definitions and testing procedures reflecting technical advancements, and introduces specific provisions for alternators.
Applications
ISO 8846 is critical for all stakeholders involved in the manufacture, certification, installation, and maintenance of electrical equipment on small crafts. Practical applications include:
Boat Manufacturers:
Ensuring onboard electrical components pose minimal risk of igniting flammable gases, enhancing safety and regulatory compliance.Marine Electrical Designers:
Developing ignition-protected devices or verifying sealing integrity and temperature limits per the standard’s test methods.Safety Inspectors and Regulators:
Using this standard as a benchmark for certification and inspection programs aligned with EU Directive 2013/53/EU and other regional regulations.Component Suppliers:
Providing tested and marked ignition-protected devices for the marine industry, facilitating market acceptance and adherence to international safety protocols.Maintenance Personnel:
Identifying compliant equipment and understanding operational limits and protection requirements to prevent hazardous incidents during repair or replacement.
Related Standards
IEC 60079 Series:
For explosion protection of electrical equipment in hazardous atmospheres, including intrinsic safety, complementing ISO 8846 where explosion-proof technologies are used.ISO 8666:
Defines measurement methodologies for small craft dimensions, relevant for determining applicability of ISO 8846 based on craft size.European Directive 2013/53/EU:
Covers recreational craft and personal watercraft safety, referencing ignition protection standards like ISO 8846 for essential requirements.ISO/IEC Directives Parts 1 & 2:
Governing the development, drafting, and maintenance of ISO standards, ensuring consistency and quality in documents like ISO 8846.
Keywords: ISO 8846, ignition protection, small craft electrical devices, flammable gas safety, marine electrical standards, propane-air mixture, surface temperature test, sealed electrical devices, non-sealed devices, marine safety standard, electrical equipment for boats, ignition-protected devices.
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Frequently Asked Questions
SIST EN ISO 8846:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Small craft - Electrical devices - Protection against ignition of surrounding flammable gases (ISO 8846:2025)". This standard covers: This document specifies test methods and requirements for the design of electrical devices, when under normal operating conditions, on small craft so that they can be operated without igniting a surrounding flammable gas atmosphere. This document does not apply to ignition protection procedures for: — devices or components that can operate in hydrogen and air mixtures; — devices with dysfunctional issues; — mechanisms of ignition from external sources, such as static electricity, lightning or other factors not related to the equipment under test.
This document specifies test methods and requirements for the design of electrical devices, when under normal operating conditions, on small craft so that they can be operated without igniting a surrounding flammable gas atmosphere. This document does not apply to ignition protection procedures for: — devices or components that can operate in hydrogen and air mixtures; — devices with dysfunctional issues; — mechanisms of ignition from external sources, such as static electricity, lightning or other factors not related to the equipment under test.
SIST EN ISO 8846:2026 is classified under the following ICS (International Classification for Standards) categories: 13.220.20 - Fire protection; 47.020.60 - Electrical equipment of ships and of marine structures; 47.080 - Small craft. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 8846:2026 has the following relationships with other standards: It is inter standard links to SIST EN 15609:2012, SIST EN 60092-507:2015, SIST EN ISO 8846:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN ISO 8846:2026 is associated with the following European legislation: EU Directives/Regulations: 2013/53/EU; Standardization Mandates: M/542. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
SIST EN ISO 8846:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2026
Mala plovila - Električne naprave - Varovanje pred vžigom gorljivih plinov v okolici
(ISO 8846:2025)
Small craft - Electrical devices - Protection against ignition of surrounding flammable
gases (ISO 8846:2025)
Kleine Wasserfahrzeuge - Elektrische Geräte - Zündschutz gegenüber entflammbaren
Gasen (ISO 8846:2025)
Petits navires - Appareils électriques - Protection contre l’inflammation des gaz
inflammables environnants (ISO 8846:2025)
Ta slovenski standard je istoveten z: EN ISO 8846:2026
ICS:
13.220.20 Požarna zaščita Fire protection
47.020.60 Električna oprema ladij in Electrical equipment of ships
konstrukcij na morju and of marine structures
47.080 Čolni Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 8846
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2026
EUROPÄISCHE NORM
ICS 47.080 Supersedes EN ISO 8846:2017
English Version
Small craft - Electrical devices - Protection against ignition
of surrounding flammable gases (ISO 8846:2025)
Petits navires - Appareils électriques - Protection Kleine Wasserfahrzeuge - Elektrische Geräte -
contre l'inflammation des gaz inflammables Zündschutz gegenüber entflammbaren Gasen (ISO
environnants (ISO 8846:2025) 8846:2025)
This European Standard was approved by CEN on 28 August 2025.
CEN 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 CEN
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 CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 8846:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered . 4
European foreword
This document (EN ISO 8846:2026) has been prepared by Technical Committee ISO/TC 188 "Small
craft" in collaboration with Technical Committee CEN/TC 464 “Small Craft” the secretariat of which is
held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by August 2026, and conflicting national standards shall
be withdrawn at the latest by August 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 8846:2017.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
For the relationship with EU Legislation, see informative Annex ZA, which is an integral part of this
document.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 8846:2025 has been approved by CEN as EN ISO 8846:2026 without any modification.
Annex ZA
(informative)
Relationship between this European Standard and the essential
requirements of Directive 2013/53/EU aimed to be covered
This European Standard has been prepared under a Commission’s standardization request
M/542/C(2015) 8736 final to provide one voluntary means of conforming to essential requirements of
Directive 2013/53/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive,
compliance with the normative clauses of this standard given in Table ZA.1 confers, within the limits of
the scope of this standard, a presumption of conformity with the corresponding essential requirements
of that Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and
Directive 2013/53/EU
Essential Requirements of Clause(s)/sub-clause(s) Remarks/Notes
Directive 2013/53/EU of this EN
I.A.5.1.1 – Inboard engine (para. 1) Clauses 4, 5, 6, 7,8
I.A.5.2.2(a) - Fuel tanks Clauses 4, 5, 6, 7, 8 In respect of protection from
electrical devices as sources of
ignition which are located in
petrol fuel tank compartments.
I.A.5.3 – Electrical system, (para. 1) Clauses 4, 5, 6, 7, 8 This Standard does not cover
ignition protection for electrical
devices that may operate in
hydrogen and oxygen mixtures
produced by vented batteries
gases escaping into the
surrounding atmosphere.
I.A.5.5 – Gas system (para. 1) Clauses 4, 5, 6, 7, 8 In respect of protection from
electrical devices as sources of
ignition which are located in LPG
cylinder enclosures.
WARNING 1 — Presumption of conformity stays valid only as long as a reference to this European
Standard is maintained in the list published in the Official Journal of the European Union. Users of this
standard should consult frequently the latest list published in the Official Journal of the European
Union.
WARNING 2 — Other Union legislation may be applicable to the product(s) falling within the scope of
this standard.
International
Standard
ISO 8846
Second edition
Small craft — Electrical devices
2025-12
— Protection against ignition of
surrounding flammable gases
Petits navires — Appareils électriques — Protection contre
l’inflammation des gaz inflammables environnants
Reference number
ISO 8846:2025(en) © ISO 2025
ISO 8846:2025(en)
© ISO 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 8846:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Design and test requirements . 2
5 External surface temperature test . 2
6 Test method — Sealed devices . 2
6.1 General .2
6.2 Apparatus .3
6.3 Test procedure .3
7 Test method — Non-sealed devices . 3
7.1 General .3
7.2 Apparatus .4
7.3 Electrical device preparation .6
7.4 Test procedure .6
7.5 Additional requirements for non-sealed electrical devices .7
7.5.1 Cranking motors .7
7.5.2 Distributors . . .7
7.5.3 Alternators .7
8 Identification . 7
Bibliography . 8
iii
ISO 8846:2025(en)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO 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, ISO 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
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as infor
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