SIST EN 3155-074:2026
(Main)Aerospace series - Electrical contacts used in elements of connection - Part 074: Contacts, electrical, quadrax, size 8, male, type E, crimp, class R - Product standard
Aerospace series - Electrical contacts used in elements of connection - Part 074: Contacts, electrical, quadrax, size 8, male, type E, crimp, class R - Product standard
This document specifies the required characteristics, tests and tooling applicable to male electrical Quadrax contacts, shielded, size 8, type E characteristic impedance 100 Ω, crimp, classes P, R and 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 075.
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 074: Elektrische quadraxiale Stiftkontakte, Größe 8, Typ E, crimpbar, Klasse R - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 074: Contacts électriques, quadrax, taille 8, mâles, type E, à sertir, classe R - Norme de produit
Le présent document spécifie les caractéristiques requises, les essais et l’outillage applicables aux contacts électriques quadrax mâles, blindés, de taille 8, de type E, d’impédance caractéristique de 100 Ω, à sertir, de classes P, R et 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 075.
Aeronavtika - Električni kontakti za uporabo v veznih elementih - 074. del: Kontakti, električni, quadrax, velikost 8, moški, tip E, nagubani, razred R - Standard za proizvod
Ta dokument določa zahtevane značilnosti, preskuse in orodja, ki se uporabljajo za moške električne kontakte Quadrax, oklopljene, velikosti 8, tip E z značilno impedanco 100 Ω, krimp, razredi P, R in S, ki se uporabljajo v povezovalnih elementih v skladu z EN 3155 002.
Uporablja se skupaj z EN 3155 001.
Povezani ženski kontakti so določeni v EN 3155 075.
General Information
- Status
- Published
- Public Enquiry End Date
- 26-Sep-2023
- 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
- 18-Mar-2026
- Effective Date
- 18-Mar-2026
- Effective Date
- 19-Jan-2023
Overview
FprEN 3155-074 (prEN 3155-074:2023) is a CEN draft product standard for aerospace electrical Quadrax contacts. It specifies the required characteristics, tests and tooling for male, shielded Quadrax contacts, size 8, Type E, crimp, with a characteristic impedance of 100 Ω, and covers classes P, R and S (different temperature ratings). This document is to be used together with EN 3155-001 and pairs with the female contact specification in EN 3155-075.
Key topics and technical requirements
- Contact type and geometry: Quadrax, size 8, male, Type E - dimensions and tolerances are defined (contact mass ≤ 3.9 g).
- Electrical performance: Target characteristic impedance 100 ±10 Ω at 100 MHz, insertion loss, VSWR and shielding effectiveness requirements are specified for high-frequency digital data transmission.
- Environmental classes:
- Class P: operating temperature −65 °C to 125 °C
- Class R: −65 °C to 150 °C
- Class S: −65 °C to 200 °C
- Materials and finishes: Body in copper alloy, gold plating with undercoat (thickness per EN 3155-001), dielectric made from PTFE or equivalent.
- Cables and ferrules: Compatibility with EN 3375 series cables (KD, KL, KH); ferrule dimensions and optional shrink sleeve guidance are included.
- Crimp tooling and assembly: Specified crimping and extraction tools (e.g., M22520/2–01 for inner contacts, M22520/5–01 for outer), wiring and crimp sequence figures, and crimp quality limits (e.g., concentricity tolerance).
- Qualification and test program: References EN 2591 test methods - key tests include contact resistance, insulation resistance, voltage proof, capacitance, surface transfer impedance (≤ 1 mΩ at 100 MHz), shielding effectiveness (100 MHz–1 GHz), characteristic impedance measurement, thermal endurance, vibration, shock and tensile strength after crimp.
Applications and who uses it
- Designed for aerospace and defence electrical connection systems carrying high-speed digital signals (star‑quad/quadrax arrangements).
- Primary users:
- Connector and contact manufacturers
- Aerospace OEMs and subcontractors (wire harness and avionics suppliers)
- Test laboratories and qualification engineers
- Procurement and certification teams specifying high-frequency, shielded crimp contacts
- Typical applications: avionics data links, flight control harnesses, sensor/data cabling where controlled impedance, shielding and high-temperature performance are required.
Related standards
- EN 3155-001 (technical specification, use together)
- EN 3155-075 (female Quadrax contacts)
- EN 2591 (test methods)
- EN 3375‑008 / ‑011 / ‑012 (Quadrax cable product standards)
- EN 3645‑001, EN 3660‑063 (connector and cable outlet accessories)
- SAE AS22520, SAE AS81969/14A (crimping and extraction tools)
Keywords: FprEN 3155-074, Quadrax contacts, aerospace electrical contacts, size 8 Type E, 100 Ω characteristic impedance, crimp contacts, shielded Quadrax, EN 3155 series.
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Frequently Asked Questions
SIST EN 3155-074:2026 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 074: Contacts, electrical, quadrax, size 8, male, type E, crimp, class R - Product standard". This standard covers: This document specifies the required characteristics, tests and tooling applicable to male electrical Quadrax contacts, shielded, size 8, type E characteristic impedance 100 Ω, crimp, classes P, R and 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 075.
This document specifies the required characteristics, tests and tooling applicable to male electrical Quadrax contacts, shielded, size 8, type E characteristic impedance 100 Ω, crimp, classes P, R and 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 075.
SIST EN 3155-074:2026 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 3155-074:2026 has the following relationships with other standards: It is inter standard links to SIST EN 2591-220:2006, SIST EN 4530-002:2024, SIST EN 3682-001:2014, SIST EN 3155-075:2022, SIST EN 3155-002:2024, SIST EN 3155-075:2009, SIST EN 2591-227:2015, SIST EN 3155-074:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
SIST EN 3155-074:2026 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 - 074. del:
Kontakti, električni, quadrax, velikost 8, moški, tip E, nagubani, razred R -
Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 074:
Contacts, electrical, quadrax, size 8, male, type E, crimp, class R - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 074: Elektrische quadraxiale Stiftkontakte, Größe 8, Typ E, crimpbar, Klasse R -
Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
074: Contacts électriques, quadrax, taille 8, mâles, type E, à sertir, classe R - Norme de
produit
Ta slovenski standard je istoveten z: EN 3155-074:2026
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 3155-074
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-074:2009
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 074: Contacts, electrical, quadrax, size 8,
male, type E, crimp, classes P, R and S - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 074 : Contacts Verwendung in Verbindungselementen - Teil 074:
électriques, quadrax, taille 8, mâles, type E, à sertir, Elektrische quadraxiale Stiftkontakte, Größe 8, Typ E,
classes P, R et S - Norme de produit crimpbar, Klassen P, R und 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 3155-074:2026 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 Product identification . 8
4.3.1 Marking . 8
4.3.2 Contact location identification . 8
4.4 Material, surface treatment . 9
4.4.1 Material . 9
4.4.2 Protective coating . 9
4.4.3 Dielectric . 9
4.5 Permissible cables . 9
4.6 Wiring . 10
4.7 Tools . 12
4.8 Tests . 12
4.8.1 General. 12
4.8.2 Connectors for qualification tests . 16
5 Designation . 17
6 Marking . 17
7 Technical specification . 17
Bibliography . 18
European foreword
This document (EN 3155-074:2026) 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 3155-074:2009.
EN 3155-074:2009:
— classes P and S added;
— normative references updated;
— dimensions in figures updated;
— specification of shield ferrule added (Figure 4);
— test sequence updated to ensure performance measurements of insertion loss (EN 2591-222) and
impedance characteristic (EN 2591-223) tests;
— subclause 4.8.2 “Connectors for qualification tests” added;
— identity block in designation updated;
— 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
quadrax contacts, shielded, size 8, type E characteristic impedance 100 Ω, crimp, classes P, R and 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 3155-075.
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 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 2591-205, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 205: Housing (shell) electrical continuity
EN 2591-206, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 206: Measurement of insulation resistance
EN 2591-207, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 207: Voltage proof test
EN 2591-212, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 212: Surface transfer impedance
EN 2591-221, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 221: Voltage Standing Wave Ratio (VSWR)
EN 2591-222, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 222: Insertion Loss (I.L.)
EN 2591-223, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 223: Measurement of characteristic impedance of a coaxial connector or contact
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 2591-306, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 306: Mould growth
EN 2591-307, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 307: Salt mist
EN 2591-314, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 314: Immersion at low air pressure
EN 2591-315, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 315: Fluid resistance
EN 2591-324, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 324: Interfacial sealing
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 2591-417, 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
...
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