SIST EN 3155-003:2026

SLOVENSKI STANDARD
01-maj-2026
Aeronavtika - Električni kontakti za vezne elemente - 003. del: Kontakti, električni,
ženski, tip A, kodrasti, razred S - Standard za proizvod
Aerospace series - Electrical contacts used in elements of connection - Part 003:
Contacts, electrical, female, type A, crimp, class S - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 003: Elektrische Buchsenkontakte, Typ A, crimpbar, Klasse S - Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
003 : Contacts électriques, femelles, type A, à sertir, classe S - Norme de produit
Ta slovenski standard je istoveten z: EN 3155-003:2026
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 3155-003
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 3155-003:2019
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 003: Contacts, electrical, female 003,
type A, crimp, class S - Product standard
Série aérospatiale - Contacts électriques utilisés dans Luft- und Raumfahrt - Elektrische Kontakte zur
les organes de connexion - Partie 003 : Contacts Verwendung in Verbindungselementen - Teil 003:
électriques, femelles 003, type A, à sertir, classe S - Elektrische Buchsenkontakte 003, Typ A, crimpbar,
Norme de produit Klasse S - Produktnorm
This European Standard was approved by CEN on 25 August 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 3155-003:2026 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 . 11
4.4 Material, surface treatment . 12
4.5 Permissible cables . 12
4.6 Tooling . 14
4.6.1 Crimping tools . 14
4.6.2 Insertion/Extraction tools . 15
4.7 Cable stripping . 16
4.8 Tests . 16
4.9 Gauges . 20
5 Designation . 20
6 Marking . 20
7 Technical specification . 21
Bibliography . 22

European foreword
This document (EN 3155-003:2026) 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 3155-003:2019.
EN 3155-003:2019:
— normative references updated;
— Figure 1 “Connector contact” extended;
— document extended by contact size 23;
— 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 female electrical
contacts 003, 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 male contacts are specified in EN 3155-008.
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 3155-002, Aerospace series — Electrical contacts used in elements of connection — Part 002: List and
utilization of contacts
EN 3545 (all parts), Aerospace series — Connectors, electrical, rectangular, with sealed and non-sealed
rear, plastic housing, locking device, operating temperatures −55 °C to 175 °C
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
TR 4837, Aerospace series — Applicable crimping tools for electrical contact product standards
EN 3155-003, EN 3155-008 and EN 3155-009 for contact size 10 and barrel size 10 only

Published by Society of Automotive Engineers (SAE), available at: https://www.sae.org/.
Published as ASD-STAN TR, available at: https://www.asd-stan.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 S corresponds to an operating temperature range
from −65 °C to 200 °C.
4.2 Dimensions and mass
In accordance with Figure 1 to Figure 8 and Table 1.
Dimensions and tolerances are given in millimetres and apply after surface treatment.
Key
1 position of the first point and the maximum length of electrical contact (point at which a square
ended minimum gauge pin of the same basic diameter as the mating contact first engages the
female contact spring member) (in accordance with EN 3155-001 for active area definition)
2 colour bands, in accordance with Table 2
3 one side only
4 manufacturer identification
5 This dimension represents the length to allow full pin engagement.
6 ⌀ A represents the bore
7 break allowed
8 clearance between sleeve and body of the contact 0,15 max. for contact size 22 & 23, 0,25 max. for
other contacts
9 not applicable for contact size 22
⌀ general concentricity
a
for size 22 and 23
for all other sizes
Figure 1 — Connector contact
Figure 2 — Detail S – Contact size 22 and 23, barrel size 22

Key
1 identification groove (optional)
2 retention groove
Figure 3 — Detail T – Contact size 22 and 23, barrel size 22

Figure 4 — Detail U – Contact size 20, barrel size 22
Figure 5 — Detail V – Contact size 12, barrel size 14

Figure 6 — Detail W – Contact size 10
Optional design
Key
1 The max entry diameter shall be compliant with the value specified in EN 3155-001 test EN 2591
...