EN 3155-015:2026

Aerospace series - Electrical contacts used in elements of connection - Part 015: Contacts, electrical, female 015, type A, crimp, class S - Product standard

This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 015, type A, crimp, class S, used in elements of connection specified in EN 3155-002.
It is used together with EN 3155-001.
The associated male contacts are specified in EN 3155-014.

Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 015: Elektrische Buchsenkontakte 015, Typ A, crimpbar, Klasse S - Produktnorm

No Scope available

Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 015 : Contacts électriques, femelles 015, type A, à sertir, classe S - Norme de produit

Le présent document spécifie les caractéristiques requises, les essais et l’outillage applicables aux contacts électriques femelles 015, de type A, à sertir, de classe S, utilisés dans les organes de connexion spécifiés dans l’EN 3155-002.
Il est utilisé conjointement avec l’EN 3155-001.
Les contacts mâles associés sont spécifiés dans l’EN 3155-014.

Aeronavtika - Električni kontakti za uporabo v veznih elementih - 015. del: Kontakti, električni, ženski, tip A, nagubani, razred S - Standard za proizvod

Ta dokument določa zahtevane značilnosti, preskuse in orodja, ki se uporabljajo za ženske električne kontakte 015, tip A, stiskanje (crimp), razred S, ki se uporabljajo v elementih povezave, določenih v EN 3155-002.
Uporablja se skupaj z EN 3155-001.
Pripadajoči moški kontakti so določeni v EN 3155-014.

General Information

• Status: Published
• Publication Date: 10-Mar-2026
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 3 - Elements of Connection (Connectors, Contacts, rear accessories, crimping tools
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 11-Mar-2026
• Completion Date: 11-Mar-2026
• Ref Project: SIST EN 3155-015:2026 - Aerospace series - Electrical contacts used in elements of connection - Part 015: Contacts, electrical, female, type A, crimp, class S - Product standard

Relations

• Replaces: EN 3155-015:2019/A1:2024 - Aerospace series - Electrical contacts used in elements of connection - Part 015: Contacts, electrical, female, type A, crimp, class S - Product standard
• Effective Date: 18-Mar-2026
• Replaces: EN 3155-015:2019 - Aerospace series - Electrical contacts used in elements of connection - Part 015: Contacts, electrical, female, type A, crimp, class S - Product standard
• Effective Date: 08-Apr-2024
• Refers: EN 2591-509:2023 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 509: Adhesion of coating on contacts
• Effective Date: 29-Apr-2026
• Refers: EN 3155-001:2025 - Aerospace series - Electrical contacts used in elements of connection - Part 001: Technical specification
• Effective Date: 29-Apr-2026
• Refers: EN 2591-102:1996 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 102: Examination of dimensions and mass
• Effective Date: 29-Apr-2026
• Refers: EN 2591-507:2002 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 507: Plating porosity
• Effective Date: 29-Apr-2026
• Refers: EN 2591-403:2025 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 403: Sinusoidal and random vibration
• Effective Date: 29-Apr-2026
• Refers: EN 2083:2001 - Aerospace series - Copper or copper alloy conductors for electrical cables - Product standard
• Effective Date: 29-Apr-2026
• Refers: EN 2591-508:2023 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 508: Measurement of thickness of coating on contacts
• Effective Date: 29-Apr-2026
• Refers: EN 3545-001:2008 - Aerospace series - Connectors, electrical, rectangular, with sealed and non-sealed rear, plastic housing, locking device, operating temperatures - 55 °C to 175 °C - Part 001: Technical specification
• Effective Date: 29-Apr-2026
• Refers: EN 4434:2005 - Aerospace series - Copper or copper alloy lightweight conductors for electrical cables - Product standard (Normal and tight tolerances)
• Effective Date: 29-Apr-2026
• Refers: EN 2591-305:1997 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 305: Rapid change of temperature
• Effective Date: 29-Apr-2026
• Refers: EN 2591-513:2002 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 513: Magnetic permeability
• Effective Date: 29-Apr-2026
• Refers: EN 2591-417:2001 - Aerospace series - Elements of electrical and optical connection - Test methods - Part 417: Tensile strength (crimped connection)
• Effective Date: 29-Apr-2026
• Refers: ISO 8843:2005 - Aircraft — Crimp-removable contacts for electrical connectors — Identification system
• Effective Date: 29-Apr-2026

Overview

EN 3155-015:2026 is a European standard developed by CEN for the aerospace industry, focusing on female electrical contacts for use in elements of connection. Specifically, it covers contacts designated as "015, type A, crimp, class S," which are intended for reliable electrical connections within aerospace applications. This standard establishes the required characteristics, operational parameters, suitable tests, and approved tooling for these high-performance crimp contacts. EN 3155-015 is used alongside EN 3155-001 and references EN 3155-002 for connector elements, with the corresponding male contacts covered by EN 3155-014.

Key Topics

• Scope and Purpose

  • Defines specifications for female crimp electrical contacts used in aerospace connector elements.
  • Specifies class S contacts with an operating temperature range from −65 °C to +200 °C.
  • Aligns with safety, reliability, and performance requirements for aerospace electrical systems.

• Characteristics and Requirements

  • Contacts are type A, suitable for general application.
  • Made from copper alloy with gold-based surface treatment for optimal conductivity and corrosion resistance.
  • Dimensions and tolerances specified for consistent fit and function.
  • Marking by color code as per ISO 8843 for easy identification.

• Tooling and Installation

  • Mandates use of crimping tools that conform to SAE AS22520.
  • Specifies compatible insertion and extraction tools per SAE AS81969.
  • Details cable stripping requirements for correct installation.

• Testing and Quality Assurance

  • Includes test methods referenced from EN 2591 series-for example, visual examination, tensile strength of the crimped connection, contact resistance, rapid temperature cycling, shock and vibration.
  • Tests ensure contacts meet specified mechanical, electrical, and environmental performance criteria.

Applications

The EN 3155-015:2026 standard is vital for organizations involved in the design, manufacture, maintenance, and quality assurance of aerospace electrical systems. Practical applications include:

• Aerospace Electrical Connectors: Ensures female crimp contacts deliver reliable performance in aircraft wiring harnesses, control panels, navigation, and communication equipment.
• Component Selection: Provides reference for engineers and procurement teams sourcing compliant components for new aircraft builds or retrofitting projects.
• Maintenance and Repair: Guides technical staff when replacing or testing electrical contacts during scheduled aircraft servicing.
• Certification and Compliance: Assists manufacturers in demonstrating compliance with European and international aerospace regulations relating to electrical connector elements.

Related Standards

To ensure full compatibility and interoperability within aerospace electrical systems, EN 3155-015:2026 should be used in conjunction with the following standards:

• EN 3155-001 - Technical specifications for aerospace series electrical contacts.
• EN 3155-002 - Lists and outlines utilization of electrical contacts in connection elements.
• EN 3155-014 - Product standard for associated male contacts.
• EN 2591 Series - Test methods for electrical and optical connection elements in aerospace applications.
• EN 2083, EN 4434 - Standards for copper and copper alloy conductors in electrical cables.
• SAE AS22520 & SAE AS81969 - Specifications for crimping and insertion/extraction tools.
• EN 3545 Series - Standards for electrical connectors, including housing and accessories.

Using these referenced standards alongside EN 3155-015:2026 ensures end-to-end quality and safety in aerospace electrical connection systems, from component sourcing through to in-service maintenance.

Keywords: EN 3155-015, aerospace electrical contacts, female crimp contacts, class S, connector elements, aerospace standards, electrical connectors, CEN, aviation wiring, connector tooling, mechanical testing, electrical systems.

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2026
Nadomešča:
SIST EN 3155-015:2019/A1:2024
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 015. del:
Kontakti, električni, ženski, tip A, nagubani, razred S - Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 015:
Contacts, electrical, female, type A, crimp, class S - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 015: Elektrische Buchsenkontakte, Typ A, crimpbar, Klasse S - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
015 : Contacts électriques, femelles, type A, à sertir, classe S - Norme de produit
Ta slovenski standard je istoveten z: EN 3155-015:2026
ICS:
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 3155-015
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-015:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 015: Contacts, electrical, female 015,
type A, crimp, class S - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 015 : Contacts Verwendung in Verbindungselementen - Teil 015:
électriques, femelles 015, type A, à sertir, classe S - Elektrische Buchsenkontakte 015, Typ A, crimpbar,
Norme de produit Klasse S - Produktnorm
This European Standard was approved by CEN on 5 October 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 3155-015:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 6
4 Required characteristics . 6
4.1 Specific characteristics . 6
4.2 Dimensions and mass . 6
4.3 Marking by colour code . 9
4.4 Material and surface treatment . 9
4.5 Permissible cables . 9
4.6 Tooling . 10
4.6.1 Crimping tools . 10
4.6.2 Insertion/extraction tools . 11
4.7 Cable stripping . 11
4.8 Tests . 12
4.9 Gauges . 14
5 Designation . 14
6 Marking . 14
7 Technical specification . 14
Bibliography . 15

European foreword
This document (EN 3155-015:2026) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
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 September 2026, and conflicting national standards shall
be withdrawn at the latest by September 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 3155-015:2019.
EN 3155-015:2019:
— Figure 2: update of the transition specification between crimp barrel and barrel shoulder for contact
size 20-20 to ensure a smoother transition.
Any feedback and questions on this document should be directed to the users’ national standards body.
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.
1 Scope
This document specifies the required characteristics, tests and tooling applicable to female electrical
contacts 015, type A, crimp, class S, used in elements of connection specified in EN 3155-002.
It is used together with EN 3155-001.
The associated male contacts are specified in EN 3155-014.
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.
EN 2083, Aerospace series — Copper or copper alloy conductors for electrical cables — Product standard
EN 2591-101, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 101: Visual examination
EN 2591-102, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 102: Examination of dimensions and mass
EN 2591-201, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 201: Contact resistance — Low level
EN 2591-202, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 202: Contact resistance at rated current
EN 2591-204, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 204: Discontinuity of contacts in the microsecond range
EN 2591-210, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 210: Electrical overload
EN 2591-301, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 301: Endurance at temperature
EN 2591-305, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 305: Rapid change of temperature
EN 2591-307, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 307: Salt mist
EN 2591-402, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 402: Shock
EN 2591-403, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 403: Sinusoidal and random vibration
EN 2591-406, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 406: Mechanical endurance
EN 2591-415, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 415: Test probe damage (female contacts)
EN 2591-417, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 417: Tensile strength (crimped connection)
EN 2591-418, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 418: Gauge insertion/extraction forces (female contacts)
EN 2591-502, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 502: Restricted entry
EN 2591-503, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 503: Contact deformation after crimping
EN 2591-507, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 507: Plating porosity
EN 2591-508, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 508: Measurement of thickness of coating on contacts
EN 2591-509, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 509: Adhesion of coating on contacts
EN 2591-513, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 513: Magnetic permeability
EN 3155-001, Aerospace series — Electrical contacts used in elements of connection — Part 001: Technical
specification
EN 3545-001, Aerospace series — Connectors, electrical, rectangular, with sealed and non-sealed rear,
plastic housing, locking device, operating temperatures −55 °C to 175 °C — Part 001: Technical specification
EN 4008-006, Aerospace series — Elements of electrical and optical connection — Crimping tools and
associated accessories — Part 006: Positioner for crimping tool M22520/7 — Product standard
EN 4434, Aerospace series — Copper or copper alloy lightweight conductors for electrical cables — Product
standard (Normal and tight tolerances)
ISO 8843, Aircraft — Crimp-removable contacts for electrical connectors — Identification system
SAE AS22520, Crimping Tools, Wire Termination, General Specification For
SAE AS81969, Installing and Removal Tools, Connector Electrical Con
...