EN 2996-005:2025

SLOVENSKI STANDARD
01-julij-2025
Aeronavtika - Odklopniki, tripolni, temperaturno kompenzirani, nazivni tok od 1 A
do 25 A - 005. del: S polariziranim signalnim kontaktom - Standard za proizvod
Aerospace series - Circuit breakers, three-pole, temperature compensated, rated current
1 A to 25 A - Part 005: With polarized signal contact - Product standard
Luft- und Raumfahrt - Schutzschalter, dreipolig, temperaturkompensiert, Nennströme
von 1 A bis 25 A - Teil 005: Mit polarisiertem Signalkontakt - Produktnorm
Série aérospatiale - Disjoncteurs tripolaires compensés en température, intensités
nominales 1 A à 25 A - Partie 005 : Avec contact de signalisation polarisé - Norme de
produit
Ta slovenski standard je istoveten z: EN 2996-005:2025
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 2996-005
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2025
EUROPÄISCHE NORM
ICS 49.060 Supersedes EN 2996-005:2006
English Version
Aerospace series - Circuit breakers, three-pole,
temperature compensated, rated currents 1 A to 25 A -
Part 005: With polarized signal contact - Product standard
Série aérospatiale - Disjoncteurs tripolaires compensés Luft- und Raumfahrt - Schutzschalter, dreipolig,
en température, intensités nominales 1 A à 25 A - temperaturkompensiert, Nennströme von 1 A bis 25 A
Partie 005 : Avec contact de signalisation polarisé - - Teil 005: Mit polarisiertem Signalkontakt -
Norme de produit Produktnorm
This European Standard was approved by CEN on 14 April 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2996-005:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Dimensions and mass . 4
4.1 Dimensional characteristics . 4
4.2 Electrical diagram . 6
4.3 Mass . 6
4.4 Panel mounting . 6
5 Characteristics . 6
5.1 Material, surface treatment . 6
5.2 Material characteristics . 6
5.2.1 Fasteners . 6
5.2.2 Recommended tightening torque of attaching nut for installation . 6
5.2.3 Recommended tightening torque of connection hardware for installation . 6
5.2.4 Recommended tools for contacts of auxiliary contact insertion and extraction . 7
5.2.5 Resistance to vibrations . 7
5.2.6 Resistance to shocks . 7
5.2.7 Mechanical endurance . 7
5.3 Environment characteristics . 7
5.3.1 Humidity . 7
5.3.2 Corrosion . 7
5.3.3 Contaminating liquids . 7
5.3.4 Overvoltage caused by lightning . 7
5.4 Electrical characteristics . 7
6 Designation . 12
7 Rated current code . 12
8 Delivery codes . 12
9 Marking . 13
10 Technical specification . 13
Bibliography . 14

European foreword
This document (EN 2996-005:2025) 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 document shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by December 2025, and conflicting national standards shall be
withdrawn at the latest by December 2025.
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 will supersede EN 2996-005:2006.
EN 2996-005:2006:
— EN 2996-005 (P3), 08/2006:
o update of Clause 2 “Normative references”;
o addition of Clause 3 “Terms and definitions”;
o update of Table 1 and Table 6 to add 28 V DC and 26 V AC, 360 Hz to 800 Hz as
a nominal voltage.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this document: 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 characteristics of three-pole circuit breakers, temperature compensated
with a rated current from 1 A to 25 A, used in aircraft on-board circuits at a temperature between
−55 °C and 125 °C for ratings ≤ 15 A and −55 °C and 90 °C for ratings > 15 A and at an altitude of
22 000 m max.
These circuit breakers are operated by a push-pull type single push button (actuator), with delayed
action “trip-free” tripping with a polarized signal contact which is open when main contacts are closed,
and inversely.
They will continue to function up to the short-circuit current.
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 2996-001:2023, Aerospace series — Circuit breakers, three-pole, temperature compensated, rated
currents 1 A to 25 A — Part 001: Technical specification
EN 3155-016, Aerospace series — Electrical contacts used in elements of connection — Part 016:
Contacts, electrical, male, type A, crimp, class S — Product standard
EN 6113, Aerospace series — Circuit breaker, connecting and attachment hardware
Aerospace series — Cut-outs for installation of electrical components
TR 6083,
AMS-STD-595, Colors Used in Government Procurement
MIL-PRF-19500, Semiconductor Devices, General Specification for
3 Terms and definitions
No terms and definitions are listed in this document.
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 Dimensions and mass
4.1 Dimensional characteristics
The dimensions given in the pictorial illustrations shall be adhered to, while the circuit breakers may
differ from those pictured.
The dimensions shall be according to Figure 1.

Published as ASD-STAN TR, available at: https://www.asd-stan.org/.
Published by Society of Automotive Engineers (SAE), available at: https://www.sae.org/.
Published by Department of Defense (DoD), available at: https://assist.dla.mil/online/start/.
Key
1 Push button released 10 1 to 3 max.
2 Green colour according to AMS-STD-595 No. 34090 11 Gauge 20 connection pins according to
EN 3155-016 M2018
3 White
4 Marking area, see Clause 8. 12 Indicative value 25°*
5 Circuits dividing partition 13 Rated current marking (white on green)
6 Connecting screw and washer 14 Positioning lug in accordance with the panel cut-
out, according to TR 6083 C202
7 Push button pressed
8 Lockwasher 15 Terminals shape free
9 Attachment nut
F1 and F2: according to EN 2996-001:2023 “Mechanical tests”.
* Tools noted in subclause 5.2.4 shall be applied without interfering with the terminal 2 connection,
even if the circuit breakers are grouped.
Figure 1 — Configuration – Dimensions – Tolerances
4.2 Electrical diagram
According to Figure 2.
Push-button released Push-button pressed

Key
o
Terminal N :
1 and 2: main contacts
3 and 4: signal contacts
Figure 2 — Electrical diagram
4.3 Mass
64 g max. (delivery code A including hardware).
4.4 Panel mounting
The requirements of EN 2996-001:2023 shall be applied.
5 Characteristics
5.1 Material, surface treatment
The requirements of EN 2996-001:2023 shall be applied.
5.2 Material characteristics
5.2.1 Fasteners
The requirements of EN 6113 shall be applied.
5.2.2 Recommended tightening torque of attaching nut for installation
(4,75 ± 0,25) Nm
5.2.3 Recommended tightening torque of connection hardware for installation
(1,6 ± 0,1) Nm
5.2.4 Recommended tools for contacts of auxiliary contact insertion and extraction
— Plastic AS81969/14A−11;
— metallic AS81969/1B−02.
5.2.5 Resistance to vibrations
5.2.5.1 Combined test: ambient temperature at 70 °C and vibrations
Sinusoidal: 10 g , according to EN 2996-001:2023.
n
Random: 5,8 gn, according to EN 2996-001:2023.
Low frequencies: 10 g , according to EN 2996-001:2023.
n
5.2.5.2 Combined test: ambient temperature at 85 °C, altitude and vibrations
Sinusoidal: 3 g , according to EN
...