SIST EN 3646-001:2009

Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 001: Technical specification

This standard specifies the general characteristics, the conditions for qualification, acceptance and quality as-surance, as well as the test programmes and groups for bayonet coupling circular connectors, intended for use in an operating temperature range of  65 °C to 175 °C or 200 °C continuous according to the class and models.

Luft- und Raumfahrt - Elektrische Rundsteckverbinder mit Bajonettkupplung, Betriebstemperatur 175 °C oder 200 °C konstant - Teil 001: Technische Lieferbedingungen

Diese Norm legt die allgemeinen Eigenschaften und die Bedingungen für die Qualifikation, Abnahme und Qualitätssicherung sowie die Prüfprogramme und Prüfgruppen für Rundsteckverbinder mit Bajonettkupplung fest, die je nach Klasse und Modell für den Gebrauch in einem konstanten Betriebstemperaturbereich von
–65 °C bis 175 °C oder 200 °C bestimmt sind.

Série aérospatiale - Connecteurs électriques circulaires à accouplement par baïonnettes, température d'utilisation 175 °C ou 200 °C continu - Partie 001 : Spécification technique

Aeronavtika - Konektorji, električni, okrogli, bajonetno sklapljanje, stalna delovna temperatura 175 °C ali 200 °C - 001. del: Tehnična specifikacija

General Information

• Status: Withdrawn
• Publication Date: 07-Apr-2009
• Withdrawal Date: 19-Jan-2016
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 20-Jan-2016
• Due Date: 12-Feb-2016
• Completion Date: 20-Jan-2016
• Ref Project: EN 3646-001:2007 - Aerospace series - Connectors, electrical, circular, bayonet coupling, op-erating temperature 175 °C or 200 °C continuous - Part 001: Technical specification

Relations

• Replaced By: SIST EN 3646-001:2016 - Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 001: Technical specification
• Effective Date: 01-Mar-2016
• Replaced By: SIST EN 3646-001:2016 - Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 001: Technical specification
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 3646-001:2009
01-maj-2009
$HURQDYWLND.RQHNWRUMLHOHNWULþQLRNURJOLEDMRQHWQRVNODSOMDQMHVWDOQDGHORYQD
WHPSHUDWXUDƒ&DOLƒ&GHO7HKQLþQDVSHFLILNDFLMD
Aerospace series - Connectors, electrical, circular, bayonet coupling, operating
temperature 175 °C or 200 °C continuous - Part 001: Technical specification
Luft- und Raumfahrt - Elektrische Rundsteckverbinder mit Bajonettkupplung,
Betriebstemperatur 175 °C oder 200 °C konstant - Teil 001: Technische
Lieferbedingungen
Série aérospatiale - Connecteurs électriques circulaires à accouplement par baïonnettes,
température d'utilisation 175 °C ou 200 °C continu - Partie 001 : Spécification technique
Ta slovenski standard je istoveten z: EN 3646-001:2007
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
SIST EN 3646-001:2009 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 3646-001:2009

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SIST EN 3646-001:2009


EUROPEAN STANDARD
EN 3646-001

NORME EUROPÉENNE

EUROPÄISCHE NORM
March 2007
ICS 49.060
English Version
Aerospace series - Connectors, electrical, circular, bayonet
coupling, operating temperature 175 °C or 200 °C continuous -
Part 001: Technical specification
Série aérospatiale - Connecteurs électriques circulaires à Luft- und Raumfahrt - Elektrische Rundsteckverbinder mit
accouplement par baïonnettes, température d'utilisation Bajonettkupplung, Betriebstemperatur 175 °C oder 200 °C
175 °C ou 200 °C continu - Partie 001 : Spécification konstant - Teil 001: Technische Lieferbedingungen
technique
This European Standard was approved by CEN on 5 June 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 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: rue de Stassart, 36  B-1050 Brussels
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3646-001:2007: E
worldwide for CEN national Members.

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Contents Page
Foreword.3
0 Introduction.4
1 Scope .4
2 Normative references .4
3 Definitions .5
4 Description .5
5 Design .7
6 Definition drawings and masses.8
7 Tests.29
8 Quality assurance.39
9 Designation and marking.44
10 Delivery conditions.44
11 Packaging .44
12 Storage.44

2

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Foreword
This document (EN 3646-001:2007) 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 re-
ceived 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 September 2007, and conflicting national standards shall be with-
drawn at the latest by September 2007.
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, Cyprus, Czech Repub-
lic, 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.
3

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
0 Introduction
This family of connectors is derived from MIL-C-26482G, series 2, the NAS 1599 bayonet connector with
which it is intermateable and which uses MIL-C-39029D for the contacts. It is particularly suitable for use on
aircraft applying EN 2282.
These connectors are distinguishable from MIL-C-26482G and NAS 1599 by:
 being of a lower mass;
 having reduced dimensions;
 accepting smaller cables.
1 Scope
This standard specifies the general characteristics, the conditions for qualification, acceptance and quality as-
surance, as well as the test programmes and groups for bayonet coupling circular connectors, intended for
use in an operating temperature range of − 65 °C to 175 °C or 200 °C continuous according to the class and
models.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated refer-
ences, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 263, Inch screw threads — General plan and selection for screws, bolts and nuts — Diameter range 0,06
to 6 in
ISO 4524-1, Metallic coatings — Test methods for electrodeposited gold and gold alloy coatings —
Part 1: Determination of coating thickness
EN 2266-002, Aerospace series — Cables, electrical, for general purpose — Operating temperatures between
− 55 °C and 200 °C — Part 002: General
EN 2282, Aerospace series — Characteristics of aircraft electrical supplies
EN 2591 (series), Aerospace series — Elements of electrical and optical connection — Test methods
EN 2591-100, Aerospace series — Elements of electrical and optical connection — Test methods —
Part 100: General
EN 3155-001, Aerospace series — Electrical contacts used in elements of connection — Part 001: Technical
)
1
specification
EN 3197, Aerospace series — Installation of aircraft electrical and optical interconnection systems
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 9133, Aerospace series — Quality management systems — Qualification procedure for aerospace
standard parts

)
1
 Published as ASD Prestandard at the date of publication of this standard.
4

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
2)
AS 1241C, Fire resistant phosphate ester hydraulic fluid for aircraft
3)
MIL-A-8243D, Anti-icing and deicing-defrosting fluids
3)
MIL-C-25769J, Cleaning compound, aircraft surface, alkaline water base fluids
MIL-C-26482G, Connector, electrical, (circular, Miniature, quick disconnect, environment resisting),
3)
receptacles and plugs, general specification for
3)
MIL-C-39029D, Contacts, electrical connector, general specification for
3)
MIL-HDBK-454, General guidelines for electronic equipment
3)
MIL-H-5606G, Hydraulic fluid, petroleum base; aircraft; missile and ordnance
3)
MIL-PRF-7808L, Lubricating oil, aircraft turbine engine, synthetic base
3)
MIL-PRF-7870C, Lubricating oil; general purpose, low temperature
3)
MIL-PRF-23699F, Lubricating oil, aircraft turbine engine, synthetic base, NATO Code Number O-156
NAS 1599, (Inactive) Connectors, general purpose, electrical, miniature circular, environment resisting, 200 °C
4)
maximum temperature
TR 4257, Aerospace series — Elements of electrical and optical connection — Relationship between the
5)
numbering systems for parts of EN 2591
3 Definitions
See EN 2591-100.
4 Description
4.1 General
Different variants of materials, housings and contact arrangements are provided according to the models de-
pending on the service conditions.
These connectors use crimp or solder contacts of sizes 20, 16 and 12.
The receptacles and plugs contain either male contacts or female contacts.
The contacts fitted in the model Y receptacles are exclusively of the male non removable solder type.

2) Published by: Society of Automotive Engineers, Inc. (SAE), 400 Commonwealth Drive, Warrendale, PA 15096-0001,
USA.
3) Published by: Department of Defense (DOD), the Pentagon, Washington, DC 20301, USA.
4) Published by: Aerospace Industries Association of America, Inc. (AIA), 1250 Eye Street, NW; Suite 1100, Washington,
DC 20005, USA.
5) Published as AECMA Technical Report at the date of publication of this standard.
5

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
The connectors are polarized by means of keyways and keys. When all the male contacts are in place, polari-
zation is obtained by different angular positions of the insulator in relation to the main slot or locking key and
shall occur before the coupling ring can carry out its function.
The visual check of coupling is obtained by viewing the locking pins through the inspection holes in the
coupling ring of the plug.
4.2 Receptacle
The receptacle may be attached by:
 square flange;
 nut, with sealing by O-ring at the attachment;
 round soldered or brazed flange for model Y connectors.
The receptacle contains five keyways in which the keys of the plug engage. The main keyway is fixed and is
wider than the others. Polarization is ensured by the different angular positions of the inserts.
4.3 Plug
The plug contains five keys which engage in the keyways of the receptacle. The main key is wider than the
others. Polarization is ensured by the different angular position of the inserts.
The coupling ring permanently fitted on the plug enables the connectors to be coupled and uncoupled. The in-
ternal guides of the coupling ring may be treated with a suitable lubricant compatible with the performance re-
quired in this standard.
The plug of models RS and WS is fitted with a grounding spring device ensuring electrical continuity between
the coupled connector housings.
4.4 Materials and surface treatment
4.4.1 General
When different metals are in close contact, adequate protection against corrosion shall be used for the
electromotive force of the cell not to exceed 0,25 V (see EN 3197).
4.4.2 Housings
The material of the housing for the connectors and for the fittings may either be passivated stainless steel or
light alloy protected against corrosion by nickel, black anodized or cadmium plating (see EN 3646-002).
4.4.3 Contacts
Unless otherwise specified, the contacts shall be in ferrous alloy for models Y and in copper alloy for the other
models.
They shall be gold-plated on an appropriate undercoat. Selective protection is authorized provided that it is
sufficient to ensure that performance is respected.
Measurement of the thickness of the protective treatment shall be effected in accordance with ISO 4524-1.
6

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
4.4.4 Non-metallic materials
The materials used for insert, seals and grommets shall have a hardness and mechanical and electrical
characteristics consistent with the required use.
5 Design
5.1 Housings
The connector housings shall be in one unit. At the rear of the connector housing there shall be either three
teeth at 120° intervals or teeth around the entire periphery. These teeth shall accommodate cable outlets or
other fittings. The receptacle shall furthermore be fitted with an O-ring seal for sealing the coupled housings.
Receptacles for attachment by nut shall contain an O-ring seal. The nut shall have holes for the passage of
locking wire.
The threads shall conform to ISO 263.
The coupling ring shall be designed so that the male and female contacts engage when it is turned clockwise
and disengaged when it is turned counter-clockwise. The coupling ring shall be knurled.
The cable outlets shall compress the connector grommets without distorting it.
5.2 Inserts
The insert carrying the male and female contacts shall be in hard material and have a cross section and radii
such that no cracks, flaking or breaks can occur in normal operation.
The insert for contacts shall be non-removable; it shall be mechanically held in the housing. Sealing shall be
provided between the housing and insert.
The front face of the insert shall be such that sealing is ensured when the connectors are coupled. The
interfacial seal of the insert of the male contacts shall be bonded on the hard insert.
The grommet shall permit sealing for all cable diameters indicated in EN 3646-002 and shall not be removable.
The mechanical contacts retention system shall be integrated in the hard insert.
The design of non-hermetic connectors shall permit individual installation of the contacts without removal of
the insert or grommet. Insertion and removal of the contacts shall be from the rear, with the tools specified in
the contact product standards.
7

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SIST EN 3646-001:2009
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6 Definition drawings and masses
The general dimensions and the masses of receptacles, plugs and protective covers are given in the product
standards.
6.1 Receptacle mating dimensions
The mating dimensions of receptacles are shown in Figure 1 and details A and B as well as in Tables 1, 2 and 3.
Dimensions and tolerances are in millimetres.

Key
1 Shells 08 to 18: 5 min.
Shells 20 to 24: 6 min.
2 Radius or chamfer 0,2 mm to 0,381 mm
3 7°30' to 11°30'
a
Position of point of electrical contact
Figure 1 — Receptacle
8

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Table 1 — Receptacle — Mating dimensions
A B C D E F H J K
Housing
size + 0,02 + 0,13 0 + 0,15

− 0,13 − 0,02 max. ± 0,18 − 0,4 − 0,05

08 12,02  9,19  7,24 14,30
10 14,99 12,44 10,21 17,27
12 19,05 15,41 13,11 21,82
8,38 8,40 0,56
8,00 8,10 0,20
14 22,23 18,59 16,28 24,99
3,55 1,98
16 25,40 21,76 19,46 28,14
18 28,58 24,43 21,72 31,32
20 31,75 27,61 24,89 34,49
9,98 10,00 2,13
22 34,93 30,78 28,07 37,67
9,60  9,70 1,78
24 38,10 33,96 31,22 4,38 40,89 3,18

Table 2 — Details A and B
P Q R U
Contact
size

 max.
2,29 2,44
a a
2,13 2,34
1,50
20 3,68
1,24
2,84 3,00
2,69 2,89
3,66 3,81 2,06
16
3,50 3,71 1,80
3,94
5,18 5,33 2,84
12
5,03 5,23 2,59
a
See Table 3.

Table 3 — Reduced contact cavities
Housing size and
Reduced contact cavities
contact arrangements
8 – 33 A, B, C
8 – 3A or 8 – 98 A, B, C
12 – 10 C, G
14 – 12 A, B, C, D, E, F, G, H
14 – 19 B, D, F, H, K, M
16 – 26 A, B, C, D, E, F, G, H, J, K, L, M, N, P, R
18 – 32 A, B, C, D, E, F, G, H, J, K, L, M, N, P, R, S, T
22 – 41 A, B, C, D, E, F, G, H, J, K, L, M, N, P, R, S, T, U, V, W, X, Y

9

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SIST EN 3646-001:2009
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6.2 Plug mating dimensions
The mating dimensions of plugs are shown in Figures 2 and 3 and in Tables 4 and 5.
Dimensions and tolerances are in millimetres.

Coupling ring, bayonet groove detail

Key
1 Three mated connectors holes (design optional)
2 Reference. Locking point of the coupling ring.
3 Three bayonet groves equally spaced within 0,13 with three holes equally spaced within 0,25 for visual
inspection of coupling (see detail C).
4 Spring ground ring shall have at least six fingers by 25,4 mm length.
5 Diameter L over spring finger
a
See Figure 1.
Figure 2 — Plug
10

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Table 4 — Plug — Mating dimensions
A B C D E F G J K L M N X
Housing
size + 0,10 + 0,05 + 0,13 + 0,39

− 0,05 − 0,10 max. − 0,15 − 0,04 min. max. min. ± 0,51

08 12,24  9,04 7,24 16,72 14,63 9,37  7,42
10 15,32 12,2910,21 19,7917,70 12,62 10,39
12 19,35 15,1413,11 23,7022,12 15,60 13,28
 9,22 1,12 9,02
4,75
 9,00 0,68  8,56
14 22,50 18,3116,28 27,4025,27 18,77 16,46
2,30 2,87
16 25,68 21,4919,46 30,5328,44 21,95 19,61
18 28,88 24,0321,72 33,30 31,62 24,61 21,89
20 32,03 27,2024,89 37,4534,79 27,79 25,07
10,78 2,70 10,59
22 35,20 30,3828,07 40,4537,97 30,96 28,25,54 2
10,56 2,26 10,13
24 38,38 33,5531,22 43,40 41,25 3,50 34,14 31,42 3,86

6.3 Receptacle and plug polarization
See Figures 3, 4 and 5 and Tables 5 and 6.
Dimensions and tolerances are in millimetres.

Plug Receptacle
Figure 3 — Polarization

11

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Table 5 — Polarization dimensions
B J L M
α
Housing
size + 0,05 + 0,08 + 0,13 + 0,13

− 0,10 − 0,20 − 0,15 − 0,02
08  9,04 10,16 10,46  9,19
10 12,29 13,41 13,71 12,44
30'
12 15,14 17,19 17,50 15,41
14 18,31 20,37 20,67 18,59
16 21,49 23,54 23,85 21,76
18 24,03 26,08 26,39 24,43 25'
20 27,20 29,26 29,56 27,61 22'
22 30,38 32,43 32,74 30,78
20'
24 33,55 35,61 35,91 33,96


Figure 4 — Front face view Figure 5 — Front face view
female insulator male insulator

12

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Table 6
Rating
Polarization (α)
see Table 9 Size and number
Housing size
of contacts
test
and contact
Polarization code
EN 2591-207
arrangements
I II 20 16 12 N W X Y Z
08-3A or 8-98 X  3  0  60 210 — —
08-33 X  3  0  90 — — —
10-02 X  2  0 — — — —
10-06 X  6  0  90 — — —
12-03 X  3 0 — — 180 —
12-08 X  8  0  90 112 203 292
12-10 X 10  0  60 155 270 295
14-04 X   4 0  45 — — —
14-05 X  5 0  40  92 184 273
14-12 X  8  4 0  43  90 — —
14-15 X 14  1 0  17 110 155 234
14-19 X 19  0  30 165 315 —
16-08 X  8 0  54 152 180 331
16-21 X 16  5 0 — — — —
16-23 X 22  1 0 158 270 — —
16-26 X 26  0  60 — 275 338
18-08 X   8 0 180 — — —
18-11 X  11 0  62 119 241 340
18-32 X 32  0  85 138 222 265
20-16 X 16 0 238 318 333 347
20-34 X 26  8 0 — — — —
20-39 X 37  2 0  63 144 252 333
20-41 X 41  0  45 126 225 —
22-12 X  12 0 — — —   6
22-21 X 21 0  16 135 175 349
22-36 X 36  0  72 144 216 288
22-41 X 27 14 0  39 135 264 —
22-55 X 55  0  30 142 226 314
24-19 X  19 0  30 165 315 —
24-31 X  31 0  90 225 255 —
24-61 X 61  0  90 180 270 324

13

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
6.4 Dimensions of the rear part
6.4.1 Model with three teeth
The dimensions of the rear part of receptacles and plugs for models with three teeth with threads for mounting
cable outlets are shown in Figure 6 and in Table 7.
The centre-line of one of the three teeth shall be diametrically opposite to the centre-line of the master keyway.
Dimensions and tolerances are in millimetres.

Key
1 Thread (3 threads min.)
2 Grommet


Figure 6 — Rear part
14

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
6.4.2 Model with teeth over the entire periphery
The dimensions of the rear part of receptacles and plugs for model with teeth over the entire periphery with
threads for mounting cable outlets are shown in Figure 7 and in Table 7.

Key
1 Thread (3 threads min.)
2 Grommet
3 N: number of teeth
Figure 7 — Rear part

15

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Table 7 — Rear part dimensions
Angular
a
A B C Thread N
Housing
tolerance
size
of axes
α
teeth
max. min. max.
0,5000-20
08  7,75  9,40 11,10 12
UNEF-2A
0,6250-24
± 3
10 10,29 12,62 14,53 15
UNEF-2A
0,7500-20
12 13,48 15,57 17,45 21
UNEF-2A
0,8750-20
14 16,89 18,75 20,62 14
UNEF-2A
1,0000-20
16 20,07 21,92 23,80 30 ± 2
UNEF-2A
1,0625-18
18 22,07 23,34 25,20 33
UNEF-2A
1,1875-18
20 25,25 26,52 28,37 36
UNEF-2A
1,3125-18
22 28,42 29,69 31,55 39 ± 1
UNEF-2A
1,4375-18
24 31,60 32,87 34,72 42
UNEF-2A
a
According to ISO 263.

6.5 Contact arrangements
The contact arrangements in the inserts are specified by Figures 8 to 38 which show the front face of inserts
which contains the male contacts, normal polarization position N.
The following tolerances apply to the inserts fitted in the housings:
 centre of each hole;
 centre of each contact end.
Identification of the contact position shall be permanently designed in contrasting colour on the front face of
the insert of interfacial seal and on the rear face of the wire sealing grommet. Identification shall not be
recessed or raised on the sealing surfaces.
Symbols for contact sizes are given in EN 3155-001.
Housing sizes and contact arrangements (see Figures 8 to 38).
16

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
08-3A or 08-98 08-33 10-02
3 contacts, size 20 3 contacts, size 20 2 contacts, size 20



Figure 8 Figure 9 Figure 10

10-06 12-03 12-08
6 contacts, size 20 3 contacts, size 16 8 contacts, size 20




Figure 11 Figure 12 Figure 13

17

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
12-10 14-04 14-05
10 contacts, size 20 4 contacts, size 12 5 contacts, size 16




Figure 14 Figure 15 Figure 16
14-12 14-15
4 contacts, size 16 1 contact, size 16
8 contacts, size 20 14 contacts, size 20



Figure 17 Figure 18
14-19 16-08
19 contacts, size 20 8 contacts, size 16
18

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SIST EN 3646-001:2009
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Figure 19 Figure 20
16-21
5 contacts, size 16
16 contacts, size 20

Figure 21
19

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
16-23 16-26
1 contact, size 16 26 contacts, size 20
22 contacts, size 20


Figure 22 Figure 23
18-08 18-11
8 contacts, size 12 11 contacts, size 16


Figure 24 Figure 25
18-32
32 contacts, size 20
20

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)

Figure 26
20-16
16 contacts, size 16

Figure 27
21

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
20-34 20-39
26 contacts, size 20 2 contacts, size 16
8 contacts, size 16 37 contacts, size 20




Figure 28 Figure 29

22

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
20-41
41 contacts, size 20

Figure 30
22-12
12 contacts, size 12

Figure 31

23

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
22-21 22-36
21 contacts, size 16 36 contacts, size 20




Figure 32 Figure 33

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
22-41 22-55
14 contacts, size 16 55 contacts, size 20
27 contacts, size 20




Figure 34 Figure 35
24-19 24-31
19 contacts, size 12 31 contacts, size 16
25

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)




Figure 36 Figure 37

26

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
24-61
61 contacts, size 20

Figure 38

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
6.6 Dimensions of contacts
6.6.1 Removable contacts
Standards for contacts are given in EN 3646-002.
6.6.2 Fixed contacts
The dimensions of fixed solder contacts, models Y, are given in detail B of Figure 1 for the front part, and in
Figure 39 and Table 8 for the dimensions of the barrel.

Key
1 Optional radius
Figure 39
Table 8
A B D E
Contact
size + 1,60

min. − 0,41 ± 0,79

2,23
20 1,07 3,17 2,39
1,55
2,94
16 1,75 4,77 3,17
2,44
3,81
12 2,85 4,77 3,17
3,30

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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
7 Tests
The tests of EN 2591, applicable in the context of this standard as well as the details necessary for imple-
menting them and for inspecting connector characteristics, are given in Table 9.
NOTE The relationship between the numerical numbering system and the former alphanumerical numbering system
for parts of EN 2591 is given in TR 4257.
Table 9
EN 2591- Designation of the test Details
101 Visual examination Initial examination: examination of connectors,
fittings, loose parts (contacts, etc.)
Details to be examined:
 identification;
 appearance;
 marking;
 surface finish.
Final examination: no loosening of parts, no crack,
excessive wear, detached part shall be observed.
102 Examination of dimensions and According to Clause 6 and product standard. The
mass checking of inaccessible dimensions on the finished
product shall be carried out on part pieces or given
by the quality organization of the manufacturer
concerned.
201 Contact resistance — Low level Not applicable
202 Contact resistance at rated current Crimp contacts: defined by the standards for contacts
specified in EN 3646-002
Solder contacts (hermetic connectors): measuring
points on the cable, nearest to the contacts

203 Electrical continuity at microvolt Not applicable
level
204 Discontinuity of contacts in the Duration of micro-discontinuity: ≤ 1 µs
microsecond range
Method B
Test time: throughout the duration of tests
EN 2591-301, EN 2591-402 and EN 2591-403
205 Housing (shell) electrical continuity
5 mΩ — plug with grounding spring system and
receptacle
50 mΩ — plug with grounding spring system and
hermetic receptacle
(continued)
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SIST EN 3646-001:2009
prEN 3646-001:2007 (E)
Table 9 (continued)
EN 2591- Designation of the test Details
206 Measurement of insulation Method A, connectors uncoupled, unless otherwise
resistance indicated below
Minimum insulation resistance:
 at ambient temperature: 1 000 MΩ (unmated
connectors);
 maximum operating temperature: 500 MΩ
(unmated connectors);
 after tests EN 2591-314, EN 2591-321,
EN 2591-324: 1 000 MΩ (mated connectors);
 after tests EN 2591-315 and EN 2591-316:
1 000 MΩ (unmated connectors);
 during test EN 2591-321: 100 MΩ (mated
connectors).
207 Voltage proof test Method A, connectors uncoupled except for tests
EN 2591-314 and EN 2591-324 and during
EN 2591-302 where they shall be mated
For tests at low pressure, voltage is applied after
30 min at the pressure indicated.
Voltage value


 Maximum leakage current: 2 mA
208 Temperature rise due to rated Not applicable
current
209 Current temperature derating Not applicable
210 Electrical overload Crimp contacts: defined by the standards for contacts
specified in EN 3646-002
Solder contacts (hermetic connectors): measuring
points on the cable, nearest to the contacts

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