EN 4165-018:2026
(Main)Aerospace series - Connectors, electrical, rectangular, modular - Operating temperature 175 °C continuous - Part 018: Protective cover for 1, 2 and 4 module receptacles series 2 and 3 - Product standard
- Abstract
This document specifies the protective cover for all receptacles series 2 and series 31 used in the family of rectangular electrical connectors.
The receptacle connectors corresponding to those protective covers are specified in EN 4165-004, EN 4165-011 and EN 4165-025.
- Status
- Published
- Publication Date
- 28-Jul-2026
- Technical Committee
- ASD-STAN - Aerospace
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 29-Jul-2026
- Completion Date
- 29-Jul-2026
EN 4165-018:2026 is a CEN European Standard for aerospace electrical rectangular modular connectors. It specifies the protective cover used with 1, 2 and 4 module receptacles in series 2 and 3, so designers, manufacturers, inspectors and buyers can identify the cover type, its marking, and the basic dimensional and technical requirements.
What does EN 4165-018:2026 specify?
EN 4165-018:2026 specifies protective covers for receptacles in the family of rectangular electrical connectors with a continuous operating temperature of 175 °C. The standard ties those covers to the matching receptacle connectors defined in EN 4165-004, EN 4165-011 and EN 4165-025.
The document is organized into:
- Scope
- Normative references
- Terms and definitions
- Required characteristics
- Protective cover
- Designation
- Marking
- Technical specification
Clause 5 splits the product description by module size: 2 modules, 4 modules and single module. The figures in that clause show the form, attachment and sealing features used for each version.
What are the key requirements of EN 4165-018:2026?
EN 4165-018:2026 sets the product characteristics by module count, then adds rules for designation, marking and the linked technical specification. In practice, this means a cover has to match the right receptacle size and be identified in a consistent way on the product and in the order description.
Module-specific protective covers
Clause 4 says the required characteristics follow Figure 1 for 2 modules, Figure 2 for 4 modules, and Figure 3 for a single module. For a user, that means the module count is the first selection point when choosing or checking a cover.
For 2-module covers, Clause 5.1 gives the dimensional and attachment arrangement, a maximum mass of 18.5 g, and features such as an unlosable cord, an eyelet, a seal and an EMI feature. That matters because the cover must stay attached, help protect the interface, and support installation in a defined way.
For 4-module covers, Clause 5.2 gives the corresponding configuration with a maximum mass of 22 g. The same kinds of retention, sealing and EMI-related features appear, so the larger cover still follows the same protective concept.
For single-module covers, Clause 5.3 gives a maximum mass of 11 g and an unlosable non metallic attachment device. This matters for users who need the smaller cover to fit the single-module receptacle while keeping the same protective and retention approach.
Clause 5.1 also notes that series 3 protective covers are not specified at the time of publication. In practice, that tells the reader to pay attention to the exact cover version covered by the figures and product description.
Identification and traceability
Clause 6 says the classifications in the description block shall follow EN 4165-002. That gives a controlled way to designate the product in specifications, procurement documents and part lists.
Clause 7 requires marking on the protective cover itself. The marking includes the identity block from Clause 6, the date of manufacture in year-week format, and the manufacturer’s name or trade mark. This supports traceability during receiving inspection, maintenance and quality control.
Technical specification link
Clause 8 requires the technical specification to follow EN 4165-001. For a buyer or engineer, that means the protective cover is not specified in isolation - it is part of the wider EN 4165 product family and must be used with the related technical specification.
What terms does EN 4165-018:2026 define?
EN 4165-018:2026 uses the terms and definitions from EN 4165-001. The document itself relies on these key terms in context:
- Protective cover - the item specified by this standard for covering the receptacle.
- Receptacle - the connector half that the protective cover fits.
- Module - the size basis used here for single, 2-module and 4-module versions.
- Class W and class F - classification categories used in the description block for the 2-module and 4-module versions.
- EMI feature - a feature intended to address electromagnetic interference in the cover design.
- Designation - the identity block used to name the product in a controlled way.
- Technical specification - the linked product specification that governs the item within the EN 4165 family.
Who uses EN 4165-018:2026?
EN 4165-018:2026 is used by aerospace connector manufacturers, harness and equipment designers, quality teams and purchasing staff working with rectangular modular electrical connectors. It is also relevant to inspection and receiving teams that need to check dimensions, marking and product identification for protective covers used on receptacles in aerospace electric equipment and systems.
What changed in EN 4165-018:2026 from the previous edition?
EN 4165-018:2026 supersedes EN 4165-018:2015. The foreword states these significant changes:
- updated normative references
- updated Figure 1, Figure 2 and Figure 3
- updated Clause 6, including example 2 with size D
- updated Clause 7 on marking
- editorial revision
Which standards are used with EN 4165-018:2026?
| Standard | What it contributes |
|---|---|
| EN 4165-001 | Technical specification for the EN 4165 family; Clause 8 points to it, and Clause 3 uses its terms and definitions. |
| EN 4165-002 | Specification of performance and contact arrangements; Clause 6 uses it for classifications in the description block. |
| EN 4165-004 | Receptacle connectors for stackable mounting, 2 and 4 modules, series 2. |
| EN 4165-011 | Receptacle connectors for flange mounting, 2 and 4 modules, series 2. |
| EN 4165-025 | Single module receptacle. |
What does the EN 4165-018:2026 document contain?
EN 4165-018:2026 contains three product figures that show the protective cover arrangements for 2 modules, 4 modules and a single module. Those figures identify the main features used for dimensions, attachment, sealing and EMI-related details.
The document also includes the designation rule in Clause 6 and the marking rule in Clause 7, which together support ordering and traceability. Clause 5 gives the mass limits and the key attachment features for each version, so the document is used both for design definition and for inspection against the product standard.
Relations
- Effective Date
- 20-Feb-2023
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Referred By
EN 4660-004:2019 - Aerospace series - Modular and Open Avionics Architectures - Part 004: Packaging - Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
- Effective Date
- 05-Aug-2026
Get Certified
Connect with accredited certification bodies for this standard
BUREAU VERITAS Certification Germany
Bureau Veritas certification in Germany.
Element Materials Technology
Materials testing and product certification.
AQMS Ltd.
AQMS provides ISO certification to SMEs across the UK.
Sponsored listings
Frequently Asked Questions
EN 4165-018:2026 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Connectors, electrical, rectangular, modular - Operating temperature 175 °C continuous - Part 018: Protective cover for 1, 2 and 4 module receptacles series 2 and 3 - Product standard". This standard covers: This document specifies the protective cover for all receptacles series 2 and series 31 used in the family of rectangular electrical connectors. The receptacle connectors corresponding to those protective covers are specified in EN 4165-004, EN 4165-011 and EN 4165-025.
This document specifies the protective cover for all receptacles series 2 and series 31 used in the family of rectangular electrical connectors. The receptacle connectors corresponding to those protective covers are specified in EN 4165-004, EN 4165-011 and EN 4165-025.
EN 4165-018:2026 is classified under the following ICS (International Classification for Standards) categories: 49.060 - Aerospace electric equipment and systems. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 4165-018:2026 has the following relationships with other standards: It is inter standard links to EN 4165-018:2015, EN 4701-001:2014, EN 4165-002:2007, EN 4165-011:2007, EN 4165-004:2007, EN 4830-001:2015, EN 3155-071:2026, EN 4165-025:2017, EN 4165-012:2005, EN 4701-001:2013, EN 3155-070:2026, EN 4660-004:2019, EN 3155-003:2026, EN 3155-002:2024, EN 4165-002:2023. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4165-018:2026 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-oktober-2026
Aeronavtika - Konektorji, električni, pravokotni, modularni - Stalna delovna
temperatura 175 °C - 018. del: Zaščitna kapa za enega, dva in štiri module, seriji 2
in 3 - Standard za proizvod
Aerospace series - Connectors, electrical, rectangular, modular - Operating temperature
175 °C continuous - Part 018: Protective cover for 1, 2 and 4 module receptacles series
2 and 3 - Product standard
Luft- und Raumfahrt - Elektrischer Rechtecksteckverbinder in modularer Bauweise -
Betriebstemperatur 175 °C konstant - Teil 018: Schutzkappe für festen Steckverbinder
mit 1, 2 und 4 Modulen, Serie 2 und 3 - Produktnorm
Série aérospatiale - Connecteurs électriques rectangulaires modulaires - Température
d'utilisation 175 °C - Partie 018 : Bouchon de vol pour les embases pour 1, 2 ou 4
modules, série 2 et série 3 - Norme de produit
Ta slovenski standard je istoveten z: EN 4165-018:2026
ICS:
31.220.10 Vtiči in vtičnice, konektorji Plug-and-socket devices.
Connectors
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4165-018
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2026
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 4165-018:2015
English Version
Aerospace series - Connectors, electrical, rectangular,
modular - Operating temperature 175 °C continuous - Part
018: Protective cover for 1, 2 and 4 module receptacles
series 2 and 3 - Product standard
Série aérospatiale - Connecteurs électriques Luft- und Raumfahrt - Elektrischer
rectangulaires modulaires - Température d'utilisation Rechtecksteckverbinder in modularer Bauweise -
175 °C continu - Partie 018 : Bouchon de vol pour Betriebstemperatur 175 °C konstant - Teil 018:
embases 1, 2 et 4 modules, série 2 et série 3 - Norme de Schutzkappe für festen Steckverbinder mit 1, 2 und 4
produit Modulen, Serie 2 und 3 - Produktnorm
This European Standard was approved by CEN on 16 February 2026.
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 4165-018:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
5 Protective cover . 4
5.1 For 2 modules, classes W and F . 4
5.2 For 4 modules, classes W and F . 6
5.3 For single module . 7
6 Designation . 8
7 Marking . 9
8 Technical specification . 9
Bibliography . 10
European foreword
This document (EN 4165-018:2026) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association
...