SIST EN 2794-004:2014

Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 20 A to 50 A - Part 004: UNC thread terminals - Product standard

This European Standard specifies the characteristics of single-pole circuit breakers, temperature compensated with a rated current from 20 A to 25 A, used in aircraft on-board circuits at a temperature between – 55 °C and 125 °C and at an altitude of 15 000 m max. These circuit breakers are operated by a push-pull type single push button (actuator), with delayed action “trip-free” tripping. They will continue to function up to the short-circuit current.

Luft- und Raumfahrt - Schutzschalter, einpolig, temperaturkompensiert, Nennströme von 20 A bis 50 A - Teil 004: UNC-Klemmengewinde - Produktnorm

Diese Europäische Norm legt die Eigenschaften einpoliger Schutzschalter, temperaturkompensiert, Nennströme von 20 A bis 25 A, zur Verwendung im Bordnetz von Flugzeugen bei Temperaturen zwischen 55 °C und 125 °C und in einer maximalen Höhe von 15 000 m fest.
Diese Schutzschalter werden durch einen Druck-Zugtaster (Aktuator) mit zeitgesteuerter Freiauslösung ge-steuert.
Sie sind bis zum Kurzschlussstrom weiterhin funktionsfähig.

Série aérospatiale - Disjoncteurs unipolaires compensés en température, intensités nominales 20 A à 50 A - Partie 004: Bornes à filetage UNC - Norme de produit

La présente Norme européenne spécifie les caractéristiques requises des disjoncteurs unipolaires compensés en température, d'intensités nominales de 20 A à 50 A, utilisés dans les circuits électriques d'aéronefs, à des températures comprises entre - 55 °C et 125 °C et à une altitude maximale de 15 000 m.
Ces disjoncteurs sont commandés par un seul bouton poussoir (bouton de commande) de type « push-pull » à déclenchement libre.
Leur fonctionnement est assuré jusqu’au courant de court-circuit.

Aeronavtika - Odklopniki, enopolni, temperaturno kompenzirani, naznačeni tok od 20 A do 50 A - 004. del: UNC-navojni priključki - Standard za izdelek

General Information

• Status: Published
• Publication Date: 09-Mar-2014
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 24-Jan-2014
• Due Date: 31-Mar-2014
• Completion Date: 10-Mar-2014
• Ref Project: EN 2794-004:2014 - Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 20 A to 50 A - Part 004: UNC thread terminals - Product standard

Relations

• Replaces: SIST EN 2794-004:2002 - Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 20 A to 50 A - Part 004: UNC thread terminals - Product standard
• Effective Date: 01-Apr-2014
• Replaces: SIST EN 2794-004:2002 - Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 20 A to 50 A - Part 004: UNC thread terminals - Product standard
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 2794-004:2014
01-april-2014
1DGRPHãþD
SIST EN 2794-004:2002
$HURQDYWLND2GNORSQLNLHQRSROQLWHPSHUDWXUQRNRPSHQ]LUDQLQD]QDþHQLWRNRG
$GR$GHO81&QDYRMQLSULNOMXþNL6WDQGDUG]DL]GHOHN
Aerospace series - Circuit breakers, single-pole, temperature compensated, rated
currents 20 A to 50 A - Part 004: UNC thread terminals - Product standard
Luft- und Raumfahrt - Schutzschalter, einpolig, temperaturkompensiert, Nennströme von
20 A bis 50 A - Teil 004: UNC-Klemmengewinde - Produktnorm
Série aérospatiale - Disjoncteurs unipolaires compensés en température, intensités
nominales 20 A à 50 A - Partie 004: Bornes à filetage UNC - Norme de produit
Ta slovenski standard je istoveten z: EN 2794-004:2014
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
SIST EN 2794-004:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 2794-004:2014

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SIST EN 2794-004:2014

EUROPEAN STANDARD
EN 2794-004

NORME EUROPÉENNE

EUROPÄISCHE NORM
January 2014
ICS 49.060 Supersedes EN 2794-004:1999
English Version
Aerospace series - Circuit breakers, single-pole, temperature
compensated, rated currents 20 A to 50 A - Part 004: UNC
thread terminals - Product standard
Série aérospatiale - Disjoncteurs unipolaires compensés en Luft- und Raumfahrt - Schutzschalter, einpolig,
température, intensités nominales 20 A à 50 A - Partie 004: temperaturkompensiert, Nennströme von 20 A bis 50 A -
Bornes à filetage UNC - Norme de produit Teil 004: UNC-Klemmengewinde - Produktnorm
This European Standard was approved by CEN on 28 September 2013.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 2794-004:2014 E
worldwide for CEN national Members.

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SIST EN 2794-004:2014
EN 2794-004:2014 (E)
Contents Page
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 .5
4.3 Mass .6
4.4 Panel cut-out .6
5 Characteristics .6
5.1 Material, surface treatment .6
5.2 Mechanical 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.7
5.2.4 Resistance to vibrations .7
5.2.5 Resistance to shocks .7
5.2.6 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
5.4.1 Nominal voltage of operational circuits .7
5.4.2 Voltage drop at Ι .8
n
5.4.3 Minimum and maximum tripping thresholds .8
5.4.4 Overload trip .8
5.4.5 Short-circuit values .9
5.4.6 No-Load and load endurance .9
5.4.7 Dielectric rigidity .9
5.4.8 Insulation resistance .9
6 Designation . 10
7 Rated current code . 10
8 Delivery hardware code . 10
9 Marking . 11
10 Technical specification . 11

2

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SIST EN 2794-004:2014
EN 2794-004:2014 (E)
Foreword
This document (EN 2794-004:2014) has been prepared by the Aerospace and Defence Industries Association
of Europe - Standardization (ASD-STAN).
After enquiries and votes car
...