SIST EN 3155-017:2026
(Main)Aerospace series - Electrical contacts used in elements of connection - Part 017: Contacts, electrical, relay base, female, type A, crimp, class P - Product standard
Aerospace series - Electrical contacts used in elements of connection - Part 017: Contacts, electrical, relay base, female, type A, crimp, class P - Product standard
This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 017, type A, crimp, class P, used in elements of connection (relay bases) according to EN 3155 002.
It is used together with EN 3155 001.
The associated male contacts are specified in the standards of relays associated to the relay bases listed in EN 3155 002.
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 017: Elektrische Buchsenkontakte, Steckfassung für Relais, Typ A, crimpbar, Klasse P - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 017 : Contacts électriques, pour socles de relais, femelles, type A, à sertir, classe P - Norme de produit
Le présent document spécifie les caractéristiques requises, les essais et l’outillage applicables aux contacts électriques femelles 017, de type A, à sertir, de classe P, utilisés dans les organes de connexion (socles de relais) en conformité avec l’EN 3155 002.
Il est utilisé conjointement avec l’EN 3155-001:2025.
Les contacts mâles associés sont spécifiés dans les normes de relais associés aux socles de relais listés dans l’EN 3155 002.
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 017. del: Kontakti, električni, podnožje za rele, ženski, tip A, nagubani, razred P - Standard za proizvod
Ta dokument določa zahtevane značilnosti, preskuse in orodja, ki se uporabljajo za ženske električne kontakte 017, tip A, krimp, razred P, ki se uporabljajo v elementih povezave (relejni podstavki) v skladu z EN 3155 002.
Uporablja se skupaj z EN 3155 001.
Pripadajoči moški kontakti so določeni v standardih relejev, povezanih z relejnimi podstavki, navedenimi v EN 3155 002.
General Information
- Status
- Published
- Public Enquiry End Date
- 05-May-2024
- Publication Date
- 06-Apr-2026
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 27-Mar-2026
- Due Date
- 01-Jun-2026
- Completion Date
- 07-Apr-2026
Relations
- 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
- 19-Jan-2023
Overview
The kSIST FprEN 3155-017:2025 standard, developed by CEN and ASD-STAN, defines the product requirements for female electrical contacts (type A, crimp, class P) used in aerospace relay bases. This part of the Aerospace series focuses on the electrical contacts employed in connection elements, specifically for relay base applications as per EN 3155-002. Serving as a complementary standard to EN 3155-001, it details the mandatory characteristics, tests, tooling, and marking requirements to ensure performance, reliability, and safety in high-demand aerospace electrical systems.
Key Topics
- Scope and Application: Applies to female type A crimp contacts, class P, designed for use in relay bases operating in extreme aerospace environments up to 25,000 meters altitude and temperatures ranging from −65 °C to 125 °C.
- Characteristics:
- Material: Copper alloy body with gold plating for enhanced conductivity and corrosion resistance.
- Dimensions: Meticulously defined contact and barrel sizes, ensuring interchangeability and compliance across aerospace components.
- Temperature Rating: Class P contacts are rated for continuous operation up to 125 °C.
- Marking and Identification: Contacts are marked with distinctive color codes consistent with ISO 8843, simplifying size identification and installation.
- Permissible Cables: Specifies compatible cable sizes (AWG and mm²) and current ratings for various contact sizes to guarantee optimal crimp connections.
- Tooling Specifications: Includes approved crimping tools (conforming to SAE-AS 22520) and insertion/extraction tools (according to SAE-AS 81969), ensuring correct assembly and maintenance.
- Crimping and Cable Preparation: Defines cable stripping lengths and crimping parameters, critical for maintaining mechanical and electrical integrity.
- Testing Procedures: Requires rigorous testing according to EN 2591 series to verify performance under environmental stresses such as temperature cycling, vibration, shock, salt mist exposure, and mechanical endurance.
- Gauge Requirements: Establishes precise gauges for insertion and extraction force measurement, ensuring reliable contact retention and service life.
Applications
The contacts specified by kSIST FprEN 3155-017:2025 are vital components in aerospace electrical systems, particularly for relay base connections in:
- Commercial and military aircraft electrical installations.
- Spacecraft and satellites requiring highly reliable electrical connectors.
- Avionics systems where precise contact performance is critical under extreme temperature and altitude conditions.
- Electrical harness assembly in aerospace manufacturing and maintenance.
By adhering to this standard, manufacturers and maintenance teams ensure the highest quality and interchangeability of critical electrical contacts, increasing safety and reducing downtime in aerospace operations.
Related Standards
kSIST FprEN 3155-017:2025 is part of a comprehensive set of aerospace connection standards, including:
- EN 3155-001: Technical specifications for electrical contacts in connection elements, serving as a foundational document alongside Part 017.
- EN 3155-002: Lists and utilization guidelines for contacts in relay bases.
- EN 2593-001: Covers technical specifications for 10 A electromagnetic plug-in relay bases compatible with the contacts specified.
- EN 2083 and EN 4434: Product standards for copper and copper alloy conductors used in aerospace electrical cables, essential for defining conductor compatibility.
- SAE-AS 22520 and SAE-AS 81969: Standards governing the crimping and insertion/extraction tooling necessary for correct contact installation and maintenance.
Conclusion
The kSIST FprEN 3155-017:2025 standard plays a critical role in the aerospace industry by setting stringent product standards for female relay base electrical contacts. It ensures consistent performance, durability, and safety required for the demanding environments encountered in aerospace applications. Compliance with this standard supports operational excellence and compatibility across manufacturers, making it an indispensable reference for aerospace electrical component designers, manufacturers, and maintenance professionals.
Keywords: aerospace electrical contacts, relay base contacts, female crimp contacts, type A electrical contacts, class P contacts, aerospace standards, EN 3155-017, electrical connector standards, crimping tools, aerospace relay bases, temperature rated electrical contacts.
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Frequently Asked Questions
SIST EN 3155-017:2026 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Electrical contacts used in elements of connection - Part 017: Contacts, electrical, relay base, female, type A, crimp, class P - Product standard". This standard covers: This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 017, type A, crimp, class P, used in elements of connection (relay bases) according to EN 3155 002. It is used together with EN 3155 001. The associated male contacts are specified in the standards of relays associated to the relay bases listed in EN 3155 002.
This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 017, type A, crimp, class P, used in elements of connection (relay bases) according to EN 3155 002. It is used together with EN 3155 001. The associated male contacts are specified in the standards of relays associated to the relay bases listed in EN 3155 002.
SIST EN 3155-017:2026 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.
SIST EN 3155-017:2026 has the following relationships with other standards: It is inter standard links to SIST EN 2593-001:2015, SIST EN 3682-001:2014, SIST EN 3155-002:2024, SIST EN 2591-227:2015, SIST EN 2591-220:2006, SIST EN 3155-017:2020. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 3155-017:2026 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 - 017. del:
Kontakti, električni, podnožje za rele, ženski, tip A, nagubani, razred P - Standard
za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 017:
Contacts, electrical, relay base, female, type A, crimp, class P - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 017: Elektrische Buchsenkontakte, Steckfassung für Relais, Typ A, crimpbar, Klasse
P - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
017 : Contacts électriques, pour socles de relais, femelles, type A, à sertir, classe P -
Norme de produit
Ta slovenski standard je istoveten z: EN 3155-017:2026
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 3155-017
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-017:2020
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 017: Contacts, electrical, relay base,
female 017, type A, crimp, class P - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 017 : Contacts Verwendung in Verbindungselementen - Teil 017:
électriques, pour socles de relais, femelles 017, type A, Elektrische Buchsenkontakte 017, Steckfassung für
à sertir, classe P - Norme de produit Relais, Typ A, crimpbar, Klasse P - 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 3155-017:2026 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 . 10
4.4 Material, surface treatment . 10
4.5 Permissible cables . 10
4.6 Tooling . 11
4.6.1 Crimping tools . 11
4.6.2 Insertion/extraction tools . 12
4.7 Cable stripping . 13
4.8 Tests . 13
4.9 Gauges . 16
5 Designation . 18
6 Marking . 18
7 Technical specification . 18
Bibliography . 19
European foreword
This document (EN 3155-017:2026) 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 3155-017:2020.
EN 3155-017:2020:
— normative references updated;
— introduction of contact size 20 and therefore modification of Figure 1 and Table 1 to Table 8;
— editorial revision of the document.
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 017, type A, crimp, class P, used in elements of connection (relay bases) in accordance with
EN 3155-002.
It is used together with EN 3155-001.
The associated male contacts are specified in the standards of relays associated to the relay bases listed
in EN 3155-002.
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 2591-100, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 100: General
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 2591-202, 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 2591-425, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 425: Unwrapping capability, solderless wrapped connections
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 2593-001, Aerospace series — Bases for 10 A electromagnetic plug-in relays, two and four poles double
thrown — Part 001: Technical specification
EN 3155-001:2025, Aerospace series — Electrical contacts used in elements of connection — Part 001:
Technical specification
EN 3155-002, Aerospace series — Electrical contacts used in elements of connection — Part 002: List and
utilization of contacts
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
Published by Society of Automotive Engineers (SAE), available at: https://www.sae.org/.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 3155-001 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
4 Required characteristics
4.1 Specific characteristics
Type A contacts are for general application and class P with an operating temperature range from
−65 °C to 125 °C.
Specific characteristics shall be in accordance with EN 259
...
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