EN 3660-021:2009
(Main)Aerospace series - Cable outlet accessories for circular and rectangular electrical and optical connectors - Part 021: Cable outlet, style A, 90°, unsealed, self-locking with clamp strain relief for EN 3645 - Product standard
Aerospace series - Cable outlet accessories for circular and rectangular electrical and optical connectors - Part 021: Cable outlet, style A, 90°, unsealed, self-locking with clamp strain relief for EN 3645 - Product standard
This product standard defines a range of cable outlets, style A, 90°, unsealed, self-locking, with clamp strain
relief for use under the following conditions:
Associated electrical connector(s) : EN 3660-002
Temperature range, Class N : − 65 °C to 200 °C
Class W : − 65 °C to 175 °C
Class K : − 65 °C to 260 °C
Luft- und Raumfahrt - Endgehäuse für elektrische und optische Rund- und Rechtecksteckverbinder - Teil 021: Endgehäuse, Bauform A, 90°-Ausführung, nicht abgedichtet, selbstsichernd, mit Zugentlastungsklemme für EN 3645 - Produktnorm
Diese Produktnorm legt eine Reihe von Endgehäusen, Bauform A, 90°-Ausführung, nicht abgedichtet, selbstsichernd,
mit Zugentlastungsklemme, für die Verwendung unter folgenden Bedingungen fest:
Zugehörige(r) elektrische(r) Steckverbinder : EN 3660-002
Temperaturbereich, Klasse N : –65 °C bis 200 °C
Klasse W : –65 °C bis 175 °C
Klasse K : –65 °C bis 260 °C
Série aérospatiale - Accessoires arrière pour connecteurs circulaires et rectangulaires électriques et optiques - Partie 021: Raccord coudé à 90° non étanche, type A, auto-freinant avec brides serre-câbles pour EN 3645 - Norme de produit
Aeronavtika - Dodatki za okrogle in pravokotne električne in optične konektorje - 021. del: Kabelska spojka, tip A, 90°, netesnjena
General Information
- Status
- Published
- Publication Date
- 29-Sep-2009
- Withdrawal Date
- 30-Mar-2010
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2 - Electrical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2025
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 3660-021:2009 is a European standard developed by CEN and ASD-STAN that specifies requirements for aerospace cable outlet accessories. This standard focuses on style A, 90° cable outlets which are unsealed, self-locking, and equipped with clamp strain relief designed specifically for electrical and optical connectors compliant with EN 3645. The cable outlets covered by this standard are critical components in aerospace applications, ensuring reliable and secure cable connections under demanding environmental conditions.
The standard defines the physical, mechanical, and thermal characteristics of cable outlets used with circular and rectangular connectors in aerospace systems. It also stipulates compatible connector interfaces, material compositions, mounting torque values, and testing protocols to ensure performance in extreme temperature ranges from -65 °C up to 260 °C, depending on the class of the cable outlet.
Key Topics
- Scope and Usage: Defines cable outlet accessories for EN 3660-002 electrical connectors with self-locking clamps and 90° orientation to optimize cable routing in aerospace systems.
- Temperature Classes:
- Class N: -65 °C to 200 °C
- Class W: -65 °C to 175 °C
- Class K: -65 °C to 260 °C
- Material and Finish:
- Class N: Aluminum with electroless nickel plating
- Class W: Aluminum with olive drab cadmium plating
- Class K: Stainless steel with passivation
- Design Specifications: Including dimensions, mass, thread sizes, and key component parts to ensure interchangeability and ease of use within aerospace applications.
- Mechanical Features: Self-locking mechanisms and clamp strain reliefs tailored for secure cable retention and durability.
- Interface Compatibility: Matches EN 3645 connectors and SAE AS85049 interface specifications to guarantee seamless integration.
- Testing and Qualification: Comprehensive testing requirements including visual inspection, mechanical endurance, vibration, salt mist resistance, shock, thermal cycling, and more to uphold aerospace reliability standards.
Applications
EN 3660-021:2009 cable outlets are primarily employed in:
- Aerospace electrical and optical systems where robust, reliable cable connections are mandatory.
- Aircraft wiring harnesses requiring 90° cable outlet accessories that optimize space and prevent strain or damage on cable terminations.
- Environments with extreme temperature fluctuations such as high-altitude flight or military aerospace platforms.
- Systems demanding self-locking features and strain relief mechanisms to maintain connector integrity during dynamic mechanical stresses and vibrations.
The standard's cable outlets allow aerospace manufacturers and maintenance providers to specify, source, and install consistent high-performance cable accessories that support mission-critical avionics and electrical systems with enhanced durability and safety.
Related Standards
- EN 3660-002: Defines associated electrical connectors compatible with these cable outlets.
- EN 3645 Series: Covers the connectors' requirements that match these cable outlets for triple start threaded, scoop-proof circular connectors.
- EN 3660-001: Provides overarching technical specifications for cable outlet accessories.
- EN 3660-037: Addresses elastomeric bushing strips compatible with cable outlets to accommodate different cable diameters.
- EN 2591-100: Establishes general test methods for electrical and optical connectors.
- SAE AS85049: General specification for electrical connector accessories relevant to aerospace applications.
By complying with EN 3660-021:2009, aerospace industry stakeholders ensure seamless system integration, known mechanical robustness, and enduring performance under stringent environmental conditions-key for advancing aerospace electrical connector reliability and safety.
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Frequently Asked Questions
EN 3660-021:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Cable outlet accessories for circular and rectangular electrical and optical connectors - Part 021: Cable outlet, style A, 90°, unsealed, self-locking with clamp strain relief for EN 3645 - Product standard". This standard covers: This product standard defines a range of cable outlets, style A, 90°, unsealed, self-locking, with clamp strain relief for use under the following conditions: Associated electrical connector(s) : EN 3660-002 Temperature range, Class N : − 65 °C to 200 °C Class W : − 65 °C to 175 °C Class K : − 65 °C to 260 °C
This product standard defines a range of cable outlets, style A, 90°, unsealed, self-locking, with clamp strain relief for use under the following conditions: Associated electrical connector(s) : EN 3660-002 Temperature range, Class N : − 65 °C to 200 °C Class W : − 65 °C to 175 °C Class K : − 65 °C to 260 °C
EN 3660-021:2009 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 3660-021:2009 has the following relationships with other standards: It is inter standard links to EN 2591-403:2025, EN 2591-317:1998, EN 3645-010:2019, EN 2591-402:2012, EN 2591-212:2005, EN 2591-408:1998, EN 2591-102:1996, EN 3645-005:2019, EN 2591-315:2015, EN 3645-006:2015, EN 2591-205:1996, EN 3645-004:2019, EN 3660-002:2016, EN 2591-420:2006, EN 2591-308:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3660-021:2009 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)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Endgehause fur elektrische und optische Rund und Rechteck steckverbinder - Teil 021: Endgehause, Bauform A, 90° AusfuhrungSérie aérospatiale - Accessoires arrière pour connecteurs circulaires et rectangulaires électriques et optiques - Partie 021: Raccord coudé à 90° non étanche, type A, autofreinant avec brides serre-câbles pour EN 3645 - Norme de produitAerospace series - Cable outlet accessories for circular and rectangular electrical and optical connectors - Part 021: Cable outlet, style A, 90°, unsealed49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 3660-021:2009SIST EN 3660-021:2009en01-december-2009SIST EN 3660-021:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3660-021
September 2009 ICS 49.060 English Version
Aerospace series - Cable outlet accessories for circular and rectangular electrical and optical connectors - Part 021: Cable outlet, style A, 90°, unsealed
Série aérospatiale - Accessoires arrière pour connecteurs circulaires et rectangulaires électriques et optiques -Partie 021: Raccord coudé à 90° non étanche, type A, auto-freinant avec brides serre-câbles pour EN 3645 -Norme de produit
Luft- und Raumfahrt - Endgehause fur elektrische und optische Rund und Rechteck steckverbinder - Teil 021:Endgehause, Bauform A, 90° Ausfuhrung This European Standard was approved by CEN on 27 June 2009.
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 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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:
Avenue Marnix 17,
B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3660-021:2009: ESIST EN 3660-021:2009
Class W : − 65 °C to 175 °C
Class K : − 65 °C to 260 °C 2 Normative references The following referenced documents are indispensable for the application 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 2591-100*, Aerospace series — Elements of electrical and optical connection — Test methods — Part 100: General. EN 3645 (series), Aerospace series
Connectors, electrical, circular, scoop-proof, triple start threaded coupling, operating tempera
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