SIST EN 3841-501:2005

Aerospace series - Circuit breakers - Test methods - Part 501: Actuator button travel

This standard specifies a method of verifying the actuator button travel of circuit breakers.
It shall be used together with EN 3841-100.

Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil 501: Weg des Betätigungsknopfes

Série aérospatiale - Disjoncteurs - Méthodes d'essais - Partie 501 : Course du bouton de commande

Aeronavtika - Odklopniki - 501. del: Hod prožilnega gumba

General Information

• Status: Published
• Publication Date: 31-Mar-2005
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2005
• Due Date: 01-Apr-2005
• Completion Date: 01-Apr-2005
• Ref Project: EN 3841-501:2004 - Aerospace series - Circuit breakers - Test methods - Part 501: Actuator button travel

Overview

EN 3841-501:2004 - Aerospace series - Circuit breakers - Test methods - Part 501: Actuator button travel defines a simple, repeatable method for verifying the travel position of circuit breaker actuator buttons used in aerospace equipment. Published by CEN (prepared by AECMA-STAN), this test method is intended to be used together with EN 3841-100 (general test methods). EN 3841-501:2004 ensures actuator button dimensions and travel positions comply with the associated product standard tolerances.

Key topics and requirements

• Scope: Verifies actuator button travel (position of the button end relative to the mounting surface).
• Measurement orientation: Dimensions are measured parallel to the actuator’s longitudinal axis (the direction of travel).
• Test conditions: Measurements are taken with the circuit breaker in both the closed and open positions.
• Repetition: Each measurement is performed three times, with one mechanical switching operation between successive measurements.
• Result evaluation: The mean of the recorded measurements is used and must fall within the tolerances specified in the applicable product standard.
• Reference requirement: This part shall be applied together with EN 3841-100 (Aerospace series – Circuit breakers – Test methods – Part 100: General).

Practical applications and who uses this standard

EN 3841-501:2004 is practical for any organization involved in the manufacture, testing, certification or maintenance of aerospace circuit breakers:

• Aerospace manufacturers - to verify design conformance and production quality of circuit breaker actuators.
• Test laboratories - to perform standardized acceptance and qualification tests.
• Quality assurance teams - for incoming inspection, batch verification and final test records.
• Maintenance and overhaul facilities - to confirm actuator travel after repair or refurbishment.
• Certification and regulatory bodies - as part of compliance evidence during component qualification.

Use cases include production inspection, design verification, periodic maintenance checks, and failure investigations where actuator travel deviations may indicate wear or damage.

Related standards

• EN 3841-100 - Aerospace series – Circuit breakers – Test methods – Part 100: General (normative reference that defines overall test conditions and common procedures).
• Product-specific circuit breaker standards and the applicable product standard (which defines the tolerance limits for actuator travel).

Keywords: EN 3841-501:2004, actuator button travel, circuit breakers, aerospace test methods, EN 3841-100, actuator travel measurement, CEN aerospace standard.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2005
Aeronavtika - Odklopniki - 501. del: Hod prožilnega gumba
Aerospace series - Circuit breakers - Test methods - Part 501: Actuator button travel
Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil 501: Weg des
Betätigungsknopfes
Série aérospatiale - Disjoncteurs - Méthodes d'essais - Partie 501 : Course du bouton de
commande
Ta slovenski standard je istoveten z: EN 3841-501:2004
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 3841-501
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2004
ICS 49.060
English version
Aerospace series - Circuit breakers - Test methods - Part 501:
Actuator button travel
Série aérospatiale - Disjoncteurs - Méthodes d'essais - Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil
Partie 501 : Course du bouton de commande 501: Weg des Betätigungsknopfes
This European Standard was approved by CEN on 10 September 2004.
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 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 translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
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, 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
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3841-501:2004: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .
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