EN 4838-005:2019
(Main)Aerospace series - Arc fault circuit breakers, single-pole, temperature compensated, rated current 3 A to 25 A - 115 V a.c. 400 Hz Constant Frequency - Part 005: With polarized signal contact - Product standard
Aerospace series - Arc fault circuit breakers, single-pole, temperature compensated, rated current 3 A to 25 A - 115 V a.c. 400 Hz Constant Frequency - Part 005: With polarized signal contact - Product standard
This European Standard specifies the required characteristics for single-pole, arc fault circuit breakers rated currents from 3 A to 25 A, switching capacity 65 In, for use in aircraft electrical systems. Their operating temperatures are between 40 °C to 85 °C at a maximum altitude of Z = 15 000 m. The thermal protection is temperature compensated and operates between 55 °C and 125 °C.
These circuit breaker are operated by a push-pull type single pushbutton (actuator), with delayed action "trip-free" tripping.
They will continue to function up to the short-circuit current.
Luft- und Raumfahrt - Störlichtbogen-Schutzschalter, einpolig, temperaturkompensiert, Nennströme von 3 A bis 25 A - 115 V Wechselstrom, 400 Hz Konstantfrequenz - Teil 005: Mit gepoltem Signalkontakt - Produktnorm
Série aérospatiale - Disjoncteurs unipolaires à détection d’arc compensés en température, intensités nominales 3 A à 25 A - 115 V c.a. 400 Hz fréquence fixe - Partie 005 : Avec contact de signalisation polarisé - Norme de produit
La présente Norme européenne spécifie les caractéristiques requises pour les disjoncteurs unipolaires à détection d’arc d’intensités nominales 3 A à 25 A, capacité de coupure 65 In, destinés à être utilisés dans les systèmes électriques des aéronefs. Leurs températures de fonctionnement sont comprises entre -40 °C et 85 °C à une altitude maximale de Z = 15 000 m. La protection thermique est compensée en température et fonctionne entre -55 °C et 125 °C.
Ces disjoncteurs sont activés par un bouton poussoir unique (bouton de commande), à déclenchement libre temporisé.
Leur fonctionnement est assuré jusqu’au courant de court-circuit.
Aeronavtika - Obločni dušilni odklopniki, enopolni, temperaturno kompenzirani, za naznačeni tok od 3 A do 25 A - 115 V izmenična napetost, 400 Hz konstantna frekvenca - 005. del: S polariziranim signalnim kontaktom - Standard za proizvod
Ta evropski standard določa potrebne lastnosti obločnih dušilnih odklopnikov, enopolnih, temperaturno kompenziranih, za naznačene tokove od 3 A do 25 A, s preklopno zmogljivostjo 65 In, za uporabo v letalskih električnih sistemih. Njihove obratovalne temperature so od 40 °C do 85 °C pri največji višini Z = 15 000 m. Toplotna zaščita je temperaturno kompenzirana in obratuje pri temperaturah od 55 °C do 125 °C.
Ti odklopniki se upravljajo z enim gumbom (sprožilom) tipa potisni-povleci z zakasnjenim proženjem brez sprožila.
Delovali bodo do kratkega stika.
General Information
- Status
- Published
- Publication Date
- 18-Jun-2019
- Withdrawal Date
- 30-Dec-2019
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2/S 5 - Protection Devices
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 19-Jun-2019
- Completion Date
- 19-Jun-2019
Overview
EN 4838-005:2019 is a CEN product standard for aerospace arc fault circuit breakers - single-pole, temperature compensated, rated 3 A to 25 A - for use in aircraft electrical systems. It covers breakers designed for 115 V a.c., 400 Hz constant-frequency systems and specifies the variant with a polarized signal contact. The standard sets requirements for mechanical, electrical and environmental performance, mounting, marking and tests (including arc fault performance referenced to EN 4838-001).
Key operational limits: ambient operation from −40 °C to 85 °C at up to 15 000 m altitude, with temperature‑compensated thermal protection operating between −55 °C and 125 °C. Breakers use a push‑pull single pushbutton actuator with delayed-action “trip‑free” tripping and are required to continue functioning up to short‑circuit currents.
Key topics and technical requirements
- Rated currents and voltage: 3 A to 25 A at 115 V a.c., 400 Hz.
- Switching capacity: defined as 65 In (or the most favourable value up to 1 000 A r.m.s. prospective current).
- Signal contact: polarized auxiliary contact with diode characteristics - max current 0.5 A at 125 °C, peak repetitive reverse voltage ≥ 800 V, JANTX quality per MIL‑S‑19500.
- Electrical diagram & terminals: main contacts terminals 1 (supply) and 2 (load); signal contacts 3 and 5; neutral via terminal 6 (Gauge 20 per EN 3155‑016).
- Mechanical & mounting: maximum mass 35 g; panel cut‑out per TR 6083; panel thickness 1–3 mm; mounting torque recommendations provided.
- Environmental & mechanical tests: vibration and shock resistance (specified g‑levels), humidity, corrosion and contaminating liquids references to EN 4838‑001.
- Performance metrics: voltage drop limits at In and at 100 mA, minimum/maximum tripping thresholds, overload trip times, no‑load/load endurance (5 000 / 2 500 operations), dielectric rigidity and insulation resistance criteria.
- Marking and delivery: manufacturing date, part number, electrical diagram, rated current code on actuator, delivery hardware codes per EN 6113.
Applications and users
EN 4838-005:2019 is intended for:
- Aerospace component manufacturers designing arc fault circuit breakers for transport and commercial aircraft.
- Avionics and electrical system designers specifying protective devices for 115 V AC 400 Hz systems.
- Procurement and quality teams verifying supplier compliance and part identification (marking and delivery kits).
- Maintenance, certification and safety engineers assessing component suitability for high‑altitude and harsh vibration/shock environments.
Keywords: EN 4838-005:2019, arc fault circuit breaker, aerospace, 115 V AC 400 Hz, single‑pole, temperature compensated, polarized signal contact, aircraft electrical systems.
Related standards
- EN 4838-001 (technical specification / tests)
- EN 3155-016 (Gauge 20 connection pins)
- EN 3841-100 (circuit breaker test methods)
- EN 6113 (connecting and attachment hardware)
- TR 6083 (panel cut‑out guidance)
- Referenced MIL standards (MIL‑S‑19500, MIL‑I‑81969) for specific component/tooling quality.
Frequently Asked Questions
EN 4838-005:2019 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Arc fault circuit breakers, single-pole, temperature compensated, rated current 3 A to 25 A - 115 V a.c. 400 Hz Constant Frequency - Part 005: With polarized signal contact - Product standard". This standard covers: This European Standard specifies the required characteristics for single-pole, arc fault circuit breakers rated currents from 3 A to 25 A, switching capacity 65 In, for use in aircraft electrical systems. Their operating temperatures are between 40 °C to 85 °C at a maximum altitude of Z = 15 000 m. The thermal protection is temperature compensated and operates between 55 °C and 125 °C. These circuit breaker are operated by a push-pull type single pushbutton (actuator), with delayed action "trip-free" tripping. They will continue to function up to the short-circuit current.
This European Standard specifies the required characteristics for single-pole, arc fault circuit breakers rated currents from 3 A to 25 A, switching capacity 65 In, for use in aircraft electrical systems. Their operating temperatures are between 40 °C to 85 °C at a maximum altitude of Z = 15 000 m. The thermal protection is temperature compensated and operates between 55 °C and 125 °C. These circuit breaker are operated by a push-pull type single pushbutton (actuator), with delayed action "trip-free" tripping. They will continue to function up to the short-circuit current.
EN 4838-005:2019 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.
You can purchase EN 4838-005:2019 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2019
Aeronavtika - Obločni dušilni odklopniki, enopolni, temperaturno kompenzirani, za
naznačeni tok od 3 A do 25 A - 115 V izmenična napetost, 400 Hz konstantna
frekvenca - 005. del: S polariziranim signalnim kontaktom - Standard za proizvod
Aerospace series - Arc fault circuit breakers, single-pole, temperature compensated,
rated current 3 A to 25 A - 115 V a.c. 400 Hz Constant Frequency - Part 005: With
polarized signal contact - Product standard
Luft- und Raumfahrt - Arc Fault Schutzschalter, einpolig, Temperaturkompensiert,
Nennströme von 3 A bis 25 A - 115 V a.c. 400 Hz Konstantfrequenz - Teil 005: Mit
polarisiertem Signalkontakt - Produktnorm
Série aérospatiale - Disjoncteurs unipolaires à détection d’arc compensés en
température, intensités nominales 3 A à 25 A - 115 V c.a. 400 Hz fréquence fixe - Partie
005: Avec contact de signalisation polarisé - Norme de produit
Ta slovenski standard je istoveten z: EN 4838-005:2019
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 4838-005
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2019
EUROPÄISCHE NORM
ICS 49.060
English Version
Aerospace series - Arc fault circuit breakers, single-pole,
temperature compensated, rated current 3 A to 25 A - 115
V a.c. 400 Hz Constant Frequency - Part 005: With
polarized signal contact - Product standard
Série aérospatiale - Disjoncteurs unipolaires à Luft- und Raumfahrt - Arc Fault Schutzschalter,
détection d'arc compensés en température, intensités einpolig, Temperaturkompensiert, Nennströme von 3
nominales 3 A à 25 A - 115 V c.a. 400 Hz fréquence fixe A bis 25 A - 115 V a.c. 400 Hz Konstantfrequenz - Teil
- Partie 005 : Avec contact de signalisation polarisé - 005: Mit polarisiertem Signalkontakt - Produktnorm
Norme de produit
This European Standard was approved by CEN on 7 December 2017.
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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4838-005:2019 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Dimension and mass . 5
5 Characteristics . 7
6 Designation. 11
7 Rated current code . 11
8 Delivery hardware codes . 11
9 Marking . 12
10 Technical specification . 12
European foreword
This document (EN 4838-005:2019) has been prepared by the Aerospace and Defence Industries
Association of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received 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 December 2019, and conflicting national standards shall
be withdrawn at the latest by December 2019.
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.
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, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United
Kingdom.
1 Scope
This document specifies the required characteristics for single-pole, arc fault circuit breakers rated
currents from 3 A to 25 A, switching capacity 65 I , for use in aircraft electrical systems. Their operating
n
temperatures are between − 40 °C to 85 °C at a maximum altitude of Z = 15 000 m. The thermal protection
is temperature compensated and operates between − 55 °C and 125 °C.
These circuit breaker are operated by a push-pull type single pushbutton (actuator), with delayed action
"trip-free" tripping.
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 3155-016, Aerospace series — Electrical contacts used in elements of connection — Part 016: Contacts,
electrical, male, type A, crimp, class S — Product standard
EN 3841-100, Aerospace series — Circuit breakers — Test Methods — Part 100: General
EN 4838-001, Aerospace series — Arc Fault Circuit breakers, single-pole, temperature compensated, rated
current 3 A to 25 A —115 Vac 400 Hz constant frequency — Part 001: Technical specification
EN 6113, Aerospace series — Circuit breakers, connecting and attachment hardware
1)
TR 6083, Aerospace series — Cut-outs for installation of electrical components
2)
MIL-S-19500B, Semiconductor Device, Diode, Type 1N969 (Navy)
2)
MIL-I-81969/1, Installing and removal tools, connector electrical contact, Type III, Class 2, composition C
2)
MIL-I-81969/14, Installing and rem
...
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