kSIST FprEN 3155-045:2025

Aerospace series - Electrical contacts used in elements of connection - Part 045: Contacts, electrical, female, type A, double crimping, class T - Product standard

This document specifies the required characteristics, tests and tooling applicable to female electrical contacts 045, type A, double crimping, class T, used in elements of connection according to EN 3155-002.
It is used together with EN 3155-001.
The associated male contacts are specified in EN 3155-044.
Double crimping contact has a barrel which is designed to crimp conductor and jacket of cable in two locations, one on the conductor and the other on the jacket. This way it protects the conductor from mechanical strengths.

Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 045: Elektrische Buchsenkontakte, Typ A, doppelt gecrimpt, Klasse T - Produktnorm

Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 045 : Contacts électriques, femelles, type A, double sertissage, classe T - Norme de produit

Le présent document spécifie les caractéristiques requises, les essais et l’outillage applicables aux contacts électriques femelles 045, de type A, double sertissage, de classe T, utilisés dans les organes de connexion conformes à l’EN 3155-002.
Il est utilisé conjointement avec l’EN 3155-001.
Les contacts mâles associés sont spécifiés dans l’EN 3155-044.
Le contact double sertissage a un fût qui permet de sertir le conducteur et la gaine du câble à deux endroits, l’un sur le conducteur et l'autre sur la gaine. Ce procédé protège le conducteur des forces mécaniques.

Aeronavtika - Električni kontakti za uporabo v spojnih elementih - 045. del: Kontakti, električni, ženski, tip A, dvojno stiskanje, razred T - Standard za proizvod

General Information

• Status: Not Published
• Public Enquiry End Date: 05-May-2024
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 23-Jul-2025
• Due Date: 10-Sep-2025
• Completion Date: 23-Jul-2025
• Ref Project: FprEN 3155-045 - Aerospace series - Electrical contacts used in elements of connection - Part 045: Contacts, electrical, female 045, type A, double crimping, class T - Product standard

Relations

• Revised: SIST EN 3155-045:2020 - Aerospace series - Electrical contacts used in elements of connection - Part 045: Contacts, electrical, female, type A, double crimping, class T - Product standard
• Effective Date: 19-Jan-2023

Overview

The kSIST FprEN 3155-045:2025 standard, titled Aerospace series - Electrical contacts used in elements of connection - Part 045: Contacts, electrical, female 045, type A, double crimping, class T - Product standard, is developed by CEN for aerospace applications. It specifies the essential characteristics, testing procedures, and tooling requirements for female electrical contacts featuring double crimping in class T. These contacts are integral components in aerospace electrical connectors, providing reliable mechanical and electrical performance under demanding conditions. This standard works in conjunction with EN 3155-001 for technical specifications and EN 3155-044 for complementary male contacts.

Key Topics

• Double Crimping Design:
  The female contacts have a barrel designed for double crimping-one crimp on the conductor and one on the cable’s jacket. This dual crimping enhances mechanical strength and protects the conductor from stress and damage during operation.
• Dimensions and Markings:
  Contacts must conform to detailed dimensional tolerances specified in millimeters. They also feature color-coded bands (per ISO 8843) for easy identification of size and type, with additional marking requirements for manufacturer identification.
• Material and Platings:
  Contacts are manufactured from copper alloy with protective plating, typically a minimum of 1.27 µm gold over a nickel undercoat, ensuring corrosion resistance and excellent electrical conductivity.
• Permissible Cable Sizes:
  Suitable for cables sized AWG 22 to 20, the standard defines the stripping length and crimping tools necessary for correct assembly to maintain performance and safety.
• Testing Protocols:
  Rigorous testing, including electrical continuity, contact resistance, endurance at high temperatures (up to 260 °C), shock, vibration, and mechanical strength, is mandated under EN 3155-001 and related aerospace standards. Special attention is given to heat resistance and durability to meet aerospace safety and reliability requirements.
• Tooling Compatibility:
  Tooling for crimping and insertion/removal conforms to SAE-AS 22520 and SAE-AS 81969 specifications, ensuring compatibility with standardized aerospace assembly equipment.

Applications

• Aerospace Electrical Connectors:
  These female contacts are designed specifically for use in aerospace electrical connectors where high reliability, mechanical robustness, and resistance to harsh environmental conditions are critical.
• Aviation and Space Systems:
  Suitable for wiring harnesses in aircraft and spacecraft, the contacts support signal and power transmission with confidence in extreme temperature and vibration scenarios.
• Defense and Military Systems:
  Their stringent testing and material specifications align well with defense applications requiring ruggedized and dependable electrical connections.
• High-Temperature Environments:
  The class T rating supports conditions with continuous operation up to 175 °C and peaks up to 260 °C, making these contacts ideal for aerospace subsystems exposed to elevated temperatures.

Related Standards

• EN 3155-001: Technical specification for electrical contacts in elements of connection-provides foundational test methods and performance criteria.
• EN 3155-002: Defines list and utilization guidelines for contacts used in aerospace connection elements.
• EN 3155-044: Specifies male electrical contacts complementing the female contacts defined in part 045.
• EN 2997-001: Covers technical specifications for circular electrical connectors with fire-resistant and operating temperature parameters relevant to aerospace use.
• EN 2083 & EN 4434: Standards for copper and copper alloy conductors used with these contacts, ensuring material compatibility and quality.
• SAE-AS 22520 & SAE-AS 81969: SAE standards governing crimping and connector tooling essential for installing and maintaining the aerospace contacts safely and efficiently.

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Keywords: aerospace electrical contacts, female connector contacts, double crimping contacts, class T contacts, aircraft wiring connectors, aerospace connector standards, electrical contact testing, crimping tooling aerospace, EN 3155-045, CEN aerospace standards.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 3155-045:2024
01-maj-2024
Aeronavtika - Električni kontakti za uporabo v spojnih elementih - 045. del:
Kontakti, električni, ženski, tip A, dvojno stiskanje, razred T - Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 045:
Contacts, electrical, female, type A, double crimping, class T - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 045: Elektrische Buchsenkontakte, Typ A, doppelt gecrimpt, Klasse T - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
045 : Contacts électriques, femelles, type A, double sertissage, classe T - Norme de
produit
Ta slovenski standard je istoveten z: prEN 3155-045
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
oSIST prEN 3155-045:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 3155-045:2024
oSIST prEN 3155-045:2024
DRAFT
EUROPEAN STANDARD
prEN 3155-045
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2023
ICS 49.060 Will supersede EN 3155-045:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 045: Contacts, electrical, female, type A,
double crimping, class T - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur
Verwendung in Verbindungselementen - Teil 045:
Elektrische Buchsenkontakte, Typ A, doppelt gecrimpt,
Klasse T - Produktnorm
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee ASD-
STAN.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 3155-045:2023 E
worldwide for CEN national Members.

oSIST prEN 3155-045:2024
prEN 3155-045:2023 (E)
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Required characteristics . 5
4.1 Dimensions and mass . 5
4.2 Marking by colour code . 8
4.3 Material, protective plating . 8
4.4 Permissible cables . 8
4.5 Cable stripping . 9
4.6 Tooling . 9
4.7 Tests . 9
4.8 Gauges . 13
5 Designation . 13
6 Marking . 13
7 Technical specification . 13
Bibliography . 14

oSIST prEN 3155-045:2024
prEN 3155-045:2023 (E)
European foreword
This document (prEN 3155-045:2023) has been prepared by the Aerospace and Defence Industries
Association of Europe — Standardization (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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 3155-045:2019.
prEN 3155-045:2023 includes the following significant technical changes with respect to
EN 3155-045:2019:
— normative references updated;
— figure of colour identification bands corrected in Table 2;
— 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.
oSIST prEN 3155-045:2024
prEN 3155-045:2023 (E)
1 Scope
This document specifies the required characteristics, tests and tooling applicable to female electrical
contacts 045, type A, double crimping, class T, used in elements of connection according to EN 3155-002.
It is used together with EN 3155-001.
The associated male contact is specified in EN 3155-044.
Double crimping contact has a barrel which is designed to crimp conductor and jacket of cable in two
locations, one on the conductor and the other on the jacket. This way it protects the conductor from
mechanical strengths.
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 and copper alloys conductors for electrical cables - Product standard
EN 2591 (all parts), Aerospace series — Elements of electrical and optical connection — Test methods
EN 2997-001, Aerospace series — Connectors, electrical, circular, coupled by threaded ring, fire-resistant
or non fire-resistant, operating temperatures - 65 °C to 175 °C continuous, 200 °C continuous, 260 °C peak
— Part 001: Technical specification
EN 3155-001:2016, 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-AS 2252
...