SIST EN 3841-402:2005

Aerospace series - Circuit breakers - Test methods - Part 402: Corrosion

This standard specifies a method of verifying the ability of circuit breakers to withstand a corrosion test.
It shall be used together with EN 3841-100.

Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil 402: Korrosion

Série aérospatiale - Disjoncteurs - Méthodes d'essais - Partie 402 : Corrosion

Aeronavtika - Odklopniki - Preskusne metode - 402. del: Korozija

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 3841-402:2004 - Aerospace series - Circuit breakers - Test methods - Part 402: Corrosion

Overview

EN 3841-402:2004 - Aerospace series - Circuit breakers - Test methods - Part 402: Corrosion - specifies a method to verify the ability of aerospace circuit breakers to withstand corrosion. Published by CEN (prepared by AECMA-STAN and approved in 2004), this part is intended to be used together with EN 3841-100 (general test methods for circuit breakers) and references the salt spray procedures of ISO 7137.

Keywords: EN 3841-402:2004, aerospace circuit breakers corrosion test, salt spray test, circuit breaker corrosion resistance, ISO 7137, aerospace standards.

Key Topics

• Scope: Defines a corrosion test method for circuit breakers used in aerospace applications. It is a verification method, not a full product specification.
• Mounting: Units should be placed in the corrosion chamber preferably without metallic supports or on non‑metallic supports to avoid masking or influencing corrosion effects.
• Test condition: Circuit breakers are tested in the ON position to assess functional and contact integrity during/after exposure.
• Test procedure reference: The salt spray exposure is carried out according to test procedure 1.9 of ISO 7137. The exact category and severity of the salt spray (exposure time, solution, etc.) are determined by the product technical specification.
• Pass/fail criteria: Acceptance requirements and any performance criteria are defined in the applicable technical specification and the product standard (e.g., EN 3841-100).

Applications

This standard is practical for:

• Aerospace component manufacturers - for design verification and production quality control of circuit breakers subject to corrosive environments.
• Qualification and test laboratories - for routine and acceptance testing using a harmonized method referenced by aerospace customers.
• Procurement and quality assurance teams - to specify corrosion resistance checks in supplier contracts and procurement documentation.
• Maintenance and reliability engineers - to understand environmental limits and test-based evidence of corrosion resilience for installed equipment.

Practical uses include environmental qualification, comparative evaluation of designs, batch acceptance testing, and compliance evidence during certification or customer audits.

Related Standards

• EN 3841-100 - Aerospace series - Circuit breakers - Test methods - Part 100: General (to be used together with Part 402).
• ISO 7137 - Aircraft - Environmental conditions and test procedures for airborne equipment (test procedure 1.9 is referenced for salt spray).

This concise reference helps stakeholders integrate EN 3841-402:2004 into test plans, procurement specifications, and product qualification programs for aerospace circuit breakers.

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2005
Aeronavtika - Odklopniki - Preskusne metode - 402. del: Korozija
Aerospace series - Circuit breakers - Test methods - Part 402: Corrosion
Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil 402: Korrosion
Série aérospatiale - Disjoncteurs - Méthodes d'essais - Partie 402 : Corrosion
Ta slovenski standard je istoveten z: EN 3841-402:2004
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 3841-402
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2004
ICS 49.060
English version
Aerospace series - Circuit breakers - Test methods - Part 402:
Corrosion
Série aérospatiale - Disjoncteurs - Méthodes d'essais - Luft- und Raumfahrt - Schutzschalter - Prüfverfahren - Teil
Partie 402 : Corrosion 402: Korrosion
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 3841-402:2004: E
worldwide for CEN national Members.

Contents Page
Foreword.3
1 Scope .4
2 Normative references .4
3 M
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