Aerospace series - Electrical contacts used in elements of connection - Part 055: Contacts, electrical, female, thermocouple NiAl, type C, crimp, class T - Product standard

This standard specifies the required characteristics, tests and tooling applicable to female contacts, thermocouple, NiAl, type C, crimp, class T, used in elements of connection according to EN 3155 002.
It shall be used together with EN 3155 001.
The associated male contacts are defined in EN 3155 054.

Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen - Teil 055: Elektrische Thermobuchsenkontakte NiAl, Typ C, crimpbar, Klasse T - Produktnorm

Diese Norm legt die Anforderungen, Prüfungen und erforderlichen Werkzeuge für elektrische Thermo¬buchsenkontakte NiAl, Typ C, crimpbar, Klasse T, zur Verwendung in elektrischen Verbindungselementen nach EN 3155-002 fest.
Sie ist in Verbindung mit EN 3155-001 anzuwenden.
Die zugehörigen Stiftkontakte sind in EN 3155-054 festgelegt.

Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie 055 : Contacts électriques, femelles, thermocouple NiAl, type C, à sertir, classe T - Norme de produit

Aeronavtika - Električni kontakti za uporabo v veznih elementih - 055. del: Kontakti, električni, ženski, termočlen NiAl, tip C, nagubani, razred T - Standard za proizvod

General Information

Status
Published
Publication Date
04-Jul-2006
Withdrawal Date
30-Jan-2007
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 2 - Electrical
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
05-Jul-2006
Completion Date
05-Jul-2006

Relations

Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
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28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
Effective Date
28-Jan-2026
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28-Jan-2026
Effective Date
28-Jan-2026
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28-Jan-2026
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28-Jan-2026
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28-Jan-2026
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28-Jan-2026
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28-Jan-2026
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28-Jan-2026
Effective Date
28-Jan-2026

Overview

EN 3155-055:2006 is a European standard developed by CEN within the aerospace sector, focusing on electrical contacts used in connection elements. Specifically, this standard covers female thermocouple electrical contacts made of Nickel-Aluminium (NiAl), Type C, crimped, Class T. These contacts are designed for precise thermocouple applications in aerospace systems, ensuring reliable temperature measurement and signal transmission under demanding environmental conditions.

This standard defines the required dimensions, materials, performance characteristics, testing methods, and tooling requirements for these contacts. It complements and should be used alongside EN 3155-001 (technical specifications) and EN 3155-002 (list and utilization of contacts). Corresponding male contacts are specified in EN 3155-054.


Key Topics

  • Scope: Specifies female NiAl thermocouple contacts for temperature ranges from -65 °C to 260 °C, suitable for aerospace electrical connection elements.
  • Dimensions & Mass: Detailed geometric parameters including contact size, barrel size, and mass are defined to ensure standardization and interchangeability.
  • Material Specification: Contacts are made of unplated Nickel-Aluminium alloy (NiAl), chosen for its stability and thermoelectric properties.
  • Marking & Identification: Colour codes and alloy markings follow ISO 8843, with specific colours assigned to different contact and barrel size combinations for easy identification.
  • Permissible Cable Types: Cables compatible with EN 4049 are specified, with acceptable conductor sizes and insulation characteristics to maintain signal integrity.
  • Tooling Requirements: Crimping and insertion/extraction tools conform to MIL standards (e.g., MIL-DTL-22520 and MIL-I-81969) ensuring precise and repeatable assembly processes.
  • Cable Stripping & Assembly: Defined stripping lengths and crimp dimensions support consistent installation quality.
  • Testing & Quality Assurance: Comprehensive tests per EN 2591 standards cover visual inspection, dimensional verification, electrical resistance, thermal cycling, mechanical endurance, environmental resistance (salt mist, vibration), and mechanical properties of crimp connections.
  • Designation System: Standardized product coding simplifies procurement and documentation, ensuring clarity in aerospace supply chains.

Applications

EN 3155-055 female thermocouple contacts are critical components in aerospace systems requiring accurate temperature measurement and control. Their applications include:

  • Engine and exhaust monitoring systems: Reliable thermal signal transmission from high-temperature sensors.
  • Environmental control systems: Precise temperature sensing in aircraft cabin and systems.
  • Flight control instrumentation: Integration in electrical connectors to maintain data accuracy under vibration and temperature extremes.
  • Thermocouple assemblies: Used in conjunction with male thermocouple contacts (EN 3155-054) to form complete sensor circuits.

These contacts support high-performance electrical connections where reliability, durability, and thermal stability are essential due to the harsh aerospace operating environment.


Related Standards

  • EN 3155-001 - Aerospace series: Electrical contacts used in connection elements - Technical specification.
  • EN 3155-002 - Aerospace series: Electrical contacts used in connection elements - List and utilization of contacts.
  • EN 3155-054 - Aerospace series: Electrical contacts - Male thermocouple NiAl Type C, crimp, class T.
  • EN 4049 - Aerospace thermocouple extension cables, high-temperature operation.
  • ISO 8843 - Aircraft: Crimp-removable contacts identification system.
  • ISO 8056-1 - Aircraft: Nickel-chromium and nickel-aluminium thermocouple extension cables - conductor requirements.
  • MIL-DTL-22520 - Crimping tools specifications for wire terminations.
  • MIL-I-81969 - Tools for installation and removal of electrical contacts.

Keywords: EN 3155-055, aerospace electrical contacts, female thermocouple contact, Nickel-Aluminium contact, NiAl Type C crimp contact, class T contact, aerospace connector standards, thermocouple electrical connection, crimping tools aerospace, temperature sensor connectors, aerospace wiring standards.

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Frequently Asked Questions

EN 3155-055:2006 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 055: Contacts, electrical, female, thermocouple NiAl, type C, crimp, class T - Product standard". This standard covers: This standard specifies the required characteristics, tests and tooling applicable to female contacts, thermocouple, NiAl, type C, crimp, class T, used in elements of connection according to EN 3155 002. It shall be used together with EN 3155 001. The associated male contacts are defined in EN 3155 054.

This standard specifies the required characteristics, tests and tooling applicable to female contacts, thermocouple, NiAl, type C, crimp, class T, used in elements of connection according to EN 3155 002. It shall be used together with EN 3155 001. The associated male contacts are defined in EN 3155 054.

EN 3155-055:2006 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 3155-055:2006 has the following relationships with other standards: It is inter standard links to EN 2591-708:2001, EN 2591-407:1999, EN 2591-416:2001, EN 2591-401:1996, EN 2591-6406:2001, EN 2591-427:2001, EN 2591-6301:2001, EN 2591-502:2001, EN 2591-508:2023, EN 2591-409:1999, EN 2591-312:1997, EN 2591-208:1996, EN 2591-503:2001, EN 2591-301:1996, EN 2591-6318:2001. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

EN 3155-055:2006 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-januar-2009
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Aerospace series - Electrical contacts used in elements of connection - Part 055:
Contacts, electrical, female, thermocouple NiAl, type C, crimp, class T - Product standard
Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung in Verbindungselementen -
Teil 055: Elektrische Thermobuchsenkontakte NiAl, Typ C, crimpbar, Klasse T -
Produktnorm
Série aérospatiale - Contacts électriques utilisés dans les organes de connexion - Partie
055 : Contacts électriques, femelles, thermocouple NiAl, type C, à sertir, classe T -
Norme de produit
Ta slovenski standard je istoveten z: EN 3155-055:2006
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 3155-055
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2006
ICS 49.060
English Version
Aerospace series - Electrical contacts used in elements of
connection - Part 055: Contacts, electrical, female,
thermocouple NiAl, type C, crimp, class T - Product standard
Série aérospatiale - Contacts électriques utilisés dans les Luft- und Raumfahrt - Elektrische Kontakte zur Verwendung
organes de connexion - Partie 055 : Contacts électriques, in Verbindungselementen - Teil 055: Elektrische
femelles, thermocouple NiAl, type C, à sertir, classe T - Thermobuchsenkontakte NiAl, Typ C, crimpbar, Klasse T -
Norme de produit Produktnorm
This European Standard was approved by CEN on 9 March 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3155-055:2006: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Definitions .5
4 Required characteristics.5
4.1 General.5
4.2 Dimensions and mass.5
4.3 Marking by colour code .6
4.4 Material .7
4.5 Permissible cables .7
4.6 Tooling .8
4.7 Cable stripping.9
4.8 Tests.9
4.9 Quality assurance. 10
5 Designation . 11
6 Marking . 11
7 Technical specification . 11

Foreword
This European Standard (EN 3155-055:2006) has been prepared by the AeroSpace and Defense Industries
Association of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
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 January 2007, and conflicting national standards shall be withdrawn at
the latest by January 2007.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
Switzerland and the United Kingdom.

1 Scope
This standard specifies the required characteristics, tests and tooling applicable to female contacts,
thermocouple, NiAl, type C, crimp, class T, used in elements of connection according to EN 3155-002.
It shall be used together with EN 3155-001.
The associated male contacts are defined in EN 3155-054.
2 Normative references
The following referenced documents are indispensable fort he application of this document. For dated
references, only the edition cited applies. For undated refer
...

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