EN 3662-006:2006
(Main)Aerospace series - Circuit breakers, three-pole, temperature compensated, rated current 20 A to 50 A - Part 006: With polarized signal contact - Bus-bar version - Product standard
Aerospace series - Circuit breakers, three-pole, temperature compensated, rated current 20 A to 50 A - Part 006: With polarized signal contact - Bus-bar version - Product standard
This standard specifies the characteristics of three-pole circuit breakers, temperature compensated with a rated current from 20 A to 50 A, used in aircraft on-board circuits at a temperature between 55 °C and 90 °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 with a polarized signal contact which is open when main contacts are closed, and inversely.
They are connected on supply side by means of bus-bar. They will continue to function up to the short-circuit current.
Luft- und Raumfahrt - Schutzschalter, dreipolig, Temperaturkompensiert, Nennströme von 20 A bis 50 A - Teil 006: Mit polarisiertem Signalkontakt - Sammelschienenversion - Produktnorm
Diese Norm legt die Eigenschaften von dreipoligen, temperaturkompensierten Schutzschaltern mit Nennströ¬men von 20 A bis 50 A fest, die in Luftfahrzeug Bordnetzen im Temperaturbereich zwischen –55 °C und 90 °C und bei einer maximalen Höhenlage von 15 000 m verwendet werden.
Diese Schutzschalter besitzen einen Druckknopf (Betätigungsknopf) mit Druck Zug Betätigung mit Freiaus¬lösung und verzögerter Auslösefunktion und einen polarisierten Signalkontakt, der bei geschlossenen Haupt¬kontakten geöffnet ist und umgekehrt.
Sie werden auf der Netzseite mit einer Sammelschiene angeschlossen. Ihre Funktion ist bis zum Kurzschluss¬strom sichergestellt.
Série aérospatiale - Disjoncteurs tripolaires compensés en température, intensités nominales 20 A à 50 A - Partie 006 : Avec contact de signalisation polarisé - Version barre-bus - Norme de produit
Aeronavtika - Odklopniki, tripolni, temperaturno kompenzirani, nazivni tok od 20 A do 50 A - 006. del: S polariziranim signalnim kontaktom - Različica z zbiralkami - Standard za proizvod
General Information
- Status
- Published
- Publication Date
- 22-Aug-2006
- Withdrawal Date
- 27-Feb-2007
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 2 - Electrical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 01-Jun-2017
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 3662-006:2006 is a CEN product standard for aerospace three‑pole circuit breakers (bus‑bar version) that are temperature compensated and rated from 20 A to 50 A. It covers circuit breakers intended for aircraft on‑board AC power systems operating between −55 °C and 90 °C and at altitudes up to 15 000 m. These devices feature a push–pull single push‑button actuator, delayed action “trip‑free” tripping and a polarized signal contact (open when main contacts are closed and vice versa). The standard ensures continued operation up to short‑circuit currents and specifies mechanical, electrical and environmental characteristics for bus‑bar connected breakers.
Key topics and requirements
- Rated currents and designation
- Ratings: 20 A, 25 A, 30 A, 35 A, 40 A, 45 A, 50 A.
- Standard designation format (example): EN3662-006A20A (includes design, rated current and delivery codes).
- Electrical characteristics
- Nominal voltage: 115/200 V a.c., frequency 360–800 Hz.
- Signal circuit: 28 V d.c., 3 mA typical; signal diode spec (JANTX/MIL‑S‑19500), max diode current 0.5 A at 125 °C.
- Voltage drop limits at rated current and defined tripping thresholds and overload trip times.
- Short‑circuit performance: prospective currents up to 2 000 A r.m.s., tested at sea level and at 15 000 m.
- Mechanical and environmental
- Bus‑bar connection version with specified terminal layout and panel cut‑out.
- Mass: max 185 g (with delivery code A hardware).
- Recommended torques: attachment nut ~5.25 ±0.25 Nm, connection hardware ~2.35 ±0.15 Nm.
- Vibration, shock and environmental endurance specified (vibration levels, 50 gn shock, humidity, corrosion, contaminant resistance).
- Endurance and insulation
- Mechanical endurance: 5 000 no‑load and 2 500 load operations (specified loads for main and signal contacts).
- Dielectric rigidity and insulation resistance values provided for sea‑level and 15 000 m conditions.
- Marking & delivery
- Marking requirements include designation, manufacture date, manufacturer ID, electrical diagram and terminal IDs. Delivery codes and hardware kits referenced to EN 6113.
Applications and users
- Practical uses:
- Protection and switching in aircraft AC distribution panels and bus‑bar systems.
- Status signalling of tripped/closed state via polarized signal contact for cockpit or remote monitoring.
- Typical users:
- Aerospace OEMs and electrical system designers
- Avionics and electrical component suppliers
- Maintenance/repair organizations and certification authorities
- Harness designers integrating bus‑bar mounted protection
Related standards
- EN 3662-001 (technical specification)
- EN 3841-305 (short‑circuit test methods)
- EN 6113 (connecting and attachment hardware)
- EN 3155-016 (electrical contacts)
- TR 6083, MIL‑standards referenced (installation tools, diode quality), FED‑STD‑595B (colors)
Keywords: EN 3662-006:2006, aerospace circuit breakers, three‑pole circuit breaker, temperature compensated, polarized signal contact, bus‑bar version, aircraft on‑board circuits.
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Frequently Asked Questions
EN 3662-006:2006 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Circuit breakers, three-pole, temperature compensated, rated current 20 A to 50 A - Part 006: With polarized signal contact - Bus-bar version - Product standard". This standard covers: This standard specifies the characteristics of three-pole circuit breakers, temperature compensated with a rated current from 20 A to 50 A, used in aircraft on-board circuits at a temperature between 55 °C and 90 °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 with a polarized signal contact which is open when main contacts are closed, and inversely. They are connected on supply side by means of bus-bar. They will continue to function up to the short-circuit current.
This standard specifies the characteristics of three-pole circuit breakers, temperature compensated with a rated current from 20 A to 50 A, used in aircraft on-board circuits at a temperature between 55 °C and 90 °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 with a polarized signal contact which is open when main contacts are closed, and inversely. They are connected on supply side by means of bus-bar. They will continue to function up to the short-circuit current.
EN 3662-006:2006 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.
EN 3662-006:2006 has the following relationships with other standards: It is inter standard links to EN 3662-001:2024, EN 3155-016:2025, EN 3841-305:2004, EN 3662-001:2006, EN 4728:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3662-006:2006 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Schutzschalter, dreipolig, Temperaturkompensiert, Nennströme von 20 A bis 50 A - Teil 006: Mit polarisiertem Signalkontakt - Sammelschienenversion - ProduktnormSérie aérospatiale - Disjoncteurs tripolaires compensés en température, intensités nominales 20 A à 50 A - Partie 006 : Avec contact de signalisation polarisé - Version barre-bus - Norme de produitAerospace series - Circuit breakers, three-pole, temperature compensated, rated current 20 A to 50 A - Part 006: With polarized signal contact - Bus-bar version - Product standard49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:EN 3662-006:2006SIST EN 3662-006:2009en,de01-julij-2009SIST EN 3662-006:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3662-006August 2006ICS 49.060 English VersionAerospace series - Circuit breakers, three-pole, temperaturecompensated, rated current 20 A to 50 A - Part 006: Withpolarized signal contact - Bus-bar version - Product standardSérie aérospatiale - Disjoncteurs tripolaires compensés entempérature, intensités nominales 20 A à 50 A - Partie 006: Avec contact de signalisation polarisé - Version barre-bus- Norme de produitLuft- und Raumfahrt - Schutzschalter, dreipolig,Temperaturkompensiert, Nennströme von 20 A bis 50 A -Teil 006: Mit polarisiertem Signalkontakt -Sammelschienenversion - ProduktnormThis 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 EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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 STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3662-006:2006: ESIST EN 3662-006:2009
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