oSIST prEN 3646-011:2026

• Abstract:

  This document specifies the characteristics of dummy receptacles in the family of bayonet coupling circular connectors, intended for use in an operating temperature range of −65 °C to 175 °C or 200 °C continuous.; It applies to models specified in Table 3.; For plugs associated with these dummy receptacles, see EN 3646 008.

• Status: Not Published
• Public Enquiry End Date: 09-Oct-2026
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 12-Aug-2026
• Due Date: 30-Dec-2026
• Ref Project: prEN 3646-011 - Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 011: Dummy receptacle - Product standard

• Revises: SIST EN 3646-011:2009 - Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 011: Dummy receptacle - Product standard
• Effective Date: 12-Feb-2025

Overview

oSIST prEN 3646-011:2026:2026 is a draft European standard issued by CEN, focusing on the aerospace series of electrical connectors. Specifically, it addresses circular connectors with bayonet coupling mechanisms and their associated dummy receptacles. These dummy receptacles are designed for applications that require products capable of operating continuously within a temperature range of −65 °C to either 175 °C or 200 °C, making them suitable for demanding aerospace environments. The standard supersedes EN 3646-011:2006 and reflects updated normative references and editorial improvements.

Key Topics

• Scope and Applicability: Defines the mechanical and environmental characteristics for dummy receptacles in the EN 3646 bayonet coupling connector family, compatible with a large range of aerospace components operating at high temperatures.
• Product Characteristics: Specifies the dimensions, mass, panel cut-out requirements, material types, surface treatments, and main performance properties. The main material options include anodized or nickel-plated aluminum alloys, suitable for 200 °C, and olive green cadmium-plated alloys for up to 175 °C continuous operation.
• Interconnection: The dummy receptacles discussed are used in conjunction with plugs conforming to EN 3646-008 and must comply in terms of mating and polarization.
• Marking and Traceability: Outlines required markings for both individual products and their packaging, ensuring traceability via manufacturer's codes, production dates, and compliance identifiers.
• Compatibility: Models and combinations must align with those specified in related EN 3646 parts, ensuring standardized assembly and interoperability for electrical connectors in aerospace systems.

Applications

oSIST prEN 3646-011:2026 addresses the needs of the aerospace industry, specifically for:

• System Integration: Facilitates consistent, reliable integration of dummy receptacles into electronic systems, control panels, or harnesses where environmental protection or placeholder protection is required.
• Maintenance and Service: Used to seal panels and prevent the ingress of contaminants or debris in unused connector positions, supporting ongoing aircraft and spacecraft maintenance routines.
• Environmental Protection: Provides a solution for protecting open bayonet circular connector interfaces in harsh temperature or corrosive environments, prolonging the life of electrical systems.
• Design Standardization: Enables manufacturers and suppliers to develop, specify, and procure dummy receptacles with confidence in their performance and interoperability across aerospace electric equipment.

Related Standards

For complete system specification and proper use of bayonet coupling circular connectors and associated hardware in aerospace applications, refer to:

• EN 3646-001: Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 001: Technical specification
• EN 3646-002: Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 002: Specification of performance and contact arrangements
• EN 3646-008: Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 008: Plug - Product standard
• EN 3646-009: Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 009: Protective cover for receptacle - Product standard

Practical Value

By complying with oSIST prEN 3646-011:2026, aerospace organizations and manufacturers ensure:

• High reliability of electrical connections in extreme operating temperatures.
• Interchangeability and compatibility across multiple suppliers and systems.
• Enhanced safety and durability for critical avionics and control systems.
• Optimized maintenance procedures by protecting unused connector positions.

oSIST prEN 3646-011:2026 is an essential standard for ensuring robust, uniform quality across the European aerospace sector's electrical circular bayonet coupling connector systems.

SLOVENSKI STANDARD
01-oktober-2026
Aeronavtika - Konektorji, električni, okrogli, bajonetno sklapljanje, stalna delovna
temperatura 175 °C ali 200 °C - 011. del: Slepa doza - Standard za proizvod
Aerospace series - Connectors, electrical, circular, bayonet coupling, operating
temperature 175 °C or 200 °C continuous - Part 011: Dummy receptacle - Product
standard
Luft- und Raumfahrt - Elektrische Rundsteckverbinder mit Bajonettkupplung,
Betriebstemperatur 175 °C oder 200 °C konstant - Teil 011: Blinddose - Produktnorm
Série aérospatiale - Connecteurs électriques circulaires à accouplement par baïonnettes,
température d'utilisation 175 °C ou 200 °C continu - Partie 011 : Embase de repos -
Norme de produit
Ta slovenski standard je istoveten z: prEN 3646-011
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.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2026
ICS 49.060 Will supersede EN 3646-011:2006
English Version
Aerospace series - Connectors, electrical, circular, bayonet
coupling, operating temperature 175 °C or 200 °C
continuous - Part 011: Dummy receptacle - Product
standard
Série aérospatiale - Connecteurs électriques circulaires Luft- und Raumfahrt - Elektrische Rundsteckverbinder
à accouplement par baïonnettes, température mit Bajonettkupplung, Betriebstemperatur 175 °C oder
d'utilisation 175 °C ou 200 °C continu - Partie 011 : 200 °C konstant - Teil 011: Blinddose - Produktnorm
Embase de repos - Norme de produit
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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 3646-011:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
4.1 Dimensions and mass . 4
4.2 Panel cut-out . 5
4.3 Material and surface treatment . 6
4.4 Main general characteristics . 6
4.5 Possible combinations of dummy receptacles and connectors . 6
4.6 Polarization for optional figure . 6
5 Designation . 7
6 Marking . 7
6.1 Marking on the product . 7
6.2 Marking on the individual packaging . 8
7 Technical specification . 8
Bibliography . 9

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