EN 3155-070:2026
(Main)Aerospace series - Electrical contacts used in elements of connection - Part 070: Contacts, electrical, male 70, type A, crimp, class S - Product standard
Aerospace series - Electrical contacts used in elements of connection - Part 070: Contacts, electrical, male 70, type A, crimp, class S - Product standard
This document specifies the required characteristics, tests and tooling applicable to male electrical contacts 070, type A, crimp, class S, used in elements of connection according to EN 3155 002.
It is used together with EN 3155 001.
The associated female contacts are specified in EN 3155 003, EN 3155 009 and EN 3155 071.
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 070: Elektrische Stiftkontakte 70, Typ A, crimpbar, Klasse S - Produktnorm
No Scope available
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 070 : Contacts électriques, mâles 70, 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 mâles 070, de type A, à sertir, de classe S, utilisés dans les organes de connexion conformes à l’EN 3155 002.
Il est utilisé conjointement avec l’EN 3155 001.
Les contacts femelles associés sont spécifiés dans l’EN 3155 003, l’EN 3155 009 et l’EN 3155 071.
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 070. del: Kontakti, električni, moški, tip A, nagubani, razred S - Standard za proizvod
Ta dokument določa zahtevane značilnosti, preskuse in orodja, ki se uporabljajo za moške električne kontakte 070, tip A, krimp, razred S, ki se uporabljajo v elementih povezave v skladu z EN 3155 002.
Uporablja se skupaj z EN 3155 001.
Pripadajoči ženski kontakti so določeni v EN 3155 003, EN 3155 009 in EN 3155 071.
General Information
- Status
- Published
- Publication Date
- 10-Mar-2026
- Technical Committee
- ASD-STAN - Aerospace
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 11-Mar-2026
- Completion Date
- 11-Mar-2026
Relations
- Effective Date
- 19-Jan-2023
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
Overview
EN 3155-070:2026 is a European standard developed by CEN within the aerospace series, focused on male electrical contacts used in connection elements. Specifically, it addresses contacts 070, type A, featuring a crimp design and belonging to class S, intended for use in demanding aerospace electrical systems. This document prescribes the essential characteristics, testing requirements, and tooling for these contacts to ensure consistent quality and performance across the industry.
The standard works in conjunction with EN 3155-001 for general technical requirements. Associated female contacts are specified separately in EN 3155-003, EN 3155-009, and EN 3155-071, ensuring complete compatibility within standardized connection systems.
Key Topics
Contact Design and Classes
- Male contact 070, type A, crimp style
- Class S, supporting an operating temperature from −65°C to +200°C
- Colour coding for identification according to ISO 8843
Material and Surface Treatment
- Made of copper alloy
- Gold plating with a protective undercoat as per EN 3155-001, for conductivity and corrosion resistance
Dimensional Requirements
- Precise tolerances and mass after surface treatment, critical for aerospace connector fit and function
Permissible Cables and Crimping
- Suitable for specific conductor sizes and types according to EN 2083 and EN 4434
- Selector numbers and tooling align with SAE AS22520 standards
Tooling and Marking
- Tooling requirements for crimping and insertion/extraction follow strict guidelines (SAE AS22520 and SAE AS81969)
- Mandatory marking by colour coding and per EN 3155-001 for traceability
Testing and Performance
- Comprehensive test methods referencing the EN 2591 series for aspects like resistance, endurance, vibration, and temperature cycling
- Ensures reliability in harsh aerospace environments
Applications
The primary purpose of EN 3155-070:2026 is to standardize male electrical contacts used in aerospace connectors. Typical applications include:
- Aircraft and Aerospace Electrical Systems
- Use in modular and rectangular connectors (e.g., EN 4165 series) for aircraft avionics, control systems, and power distribution
- Satellite and Spacecraft Assemblies
- Ensures robust and reliable electrical connections in critical space systems
- Defense and High-Reliability Electronics
- Suitable for military aircraft, unmanned vehicles, and mission-critical infrastructure where performance and traceability are vital
Benefits of adhering to this standard include:
- Interoperability: Guarantees compatibility with other standardized components and connector modules
- Quality Assurance: Defines rigorous testing and marking requirements for consistent, high-reliability performance
- Lifecycle Support: Facilitates maintenance, replacement, and certification processes by using approved, traceable components
Related Standards
For comprehensive implementation, reference the following related standards:
- EN 3155-001: Aerospace series - Electrical contacts, general technical specification
- EN 3155-002: List and utilization of contacts
- EN 3155-003, EN 3155-009, EN 3155-071: Female contact specifications for full connector assemblies
- EN 2083, EN 4434: Aerospace electrical conductors and cable requirements
- EN 4165 series: Modular electrical connectors for aerospace
- EN 2591 series: Aerospace electrical and optical connection test methods
- ISO 8843: Colour identification system for crimped contacts
- SAE AS22520, SAE AS81969: Crimping and insertion/extraction tooling specifications
By following EN 3155-070:2026, aerospace manufacturers and suppliers ensure high-quality, interchangeable, and reliable electrical contacts that meet stringent international expectations for safety and performance in mission-critical applications.
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 3155-070:2026 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Electrical contacts used in elements of connection - Part 070: Contacts, electrical, male 70, type A, crimp, class S - Product standard". This standard covers: This document specifies the required characteristics, tests and tooling applicable to male electrical contacts 070, type A, crimp, class S, used in elements of connection according to EN 3155 002. It is used together with EN 3155 001. The associated female contacts are specified in EN 3155 003, EN 3155 009 and EN 3155 071.
This document specifies the required characteristics, tests and tooling applicable to male electrical contacts 070, type A, crimp, class S, used in elements of connection according to EN 3155 002. It is used together with EN 3155 001. The associated female contacts are specified in EN 3155 003, EN 3155 009 and EN 3155 071.
EN 3155-070:2026 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 3155-070:2026 has the following relationships with other standards: It is inter standard links to EN 3155-070:2019, EN 3545-002:2008, EN 2591-220:2005, EN 3155-071:2007, EN 3155-002:2024, EN 3155-082:2019, EN 3155-071:2014, EN 3155-071:2019, EN 4165-001:2015, EN 3682-001:2013, EN 3155-082:2015, EN 3545-001:2008, EN 4165-003:2016, EN 2591-227:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3155-070:2026 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
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 070. del:
Kontakti, električni, moški, tip A, nagubani, razred S - Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 070:
Contacts, electrical, male, type A, crimp, class S - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 070: Elektrische Stiftkontakte, Typ A, crimpbar, Klasse S - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
070 : Contacts électriques, mâles, type A, à sertir, classe S - Norme de produit
Ta slovenski standard je istoveten z: EN 3155-070:2026
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 3155-070
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-070:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 070: Contacts, electrical, male 70, type A,
crimp, class S - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 070 : Contacts Verwendung in Verbindungselementen - Teil 070:
électriques, mâles 70, type A, à sertir, classe S - Norme Elektrische Stiftkontakte 70, Typ A, crimpbar, Klasse S
de produit - 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 3155-070:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Required characteristics . 6
4.1 Specific characteristics . 6
4.2 Dimensions and mass . 6
4.3 Marking by colour code . 7
4.4 Material, surface treatment . 7
4.5 Permissible cables . 7
4.6 Tooling . 8
4.6.1 Crimping tools . 8
4.6.2 Insertion/Extraction tools . 8
4.7 Cable stripping . 9
4.8 Tests . 9
4.9 Gauges . 12
5 Designation . 13
6 Marking . 13
7 Technical specification . 13
Bibliography . 14
European foreword
This document (EN 3155-070:2026) 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 3155-070:2019.
EN 3155-070:2019:
— Table 5 Insertion/extraction tools updated and notes added;
— document editorially revised.
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 male electrical
contacts 070, type A, crimp, class S, used in elements of connection in accordance with EN 3155-002.
It is used together with EN 3155-001.
The associated female contacts are specified in EN 3155-003, EN 3155-009 and EN 3155-071.
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 2591-416, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 416: Contact bending strength
EN 2591-417, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 417: Tensile strength (crimped connection)
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 4165 (all parts), Aerospace series — Connectors, electrical, rectangular, modular — Operating
temperature 175 °C continuous
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 Contact, General Specification for
3 Terms and definitions
For the purposes of
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.
Loading comments...