SIST EN IEC 63522-44:2025

Electrical relays - Tests and measurements - Part 44: Corrosive atmosphere due to salt mist

IEC 63522-44:2025 This part of IEC 63522 is used for testing all kinds of electrical relays and for evaluating their ability to perform under expected conditions of transportation, storage and all aspects of operational use. The object of this test is to define a standard test method for salt mist.

Elektrische Relais - Mess- und Prüfverfahren - Teil 44: Salznebel

Relais électriques - Essais et mesurages - Partie 44: Atmosphère corrosive due au brouillard salin

IEC 63522-44:2025 La présente partie de l'IEC 63522 traite des essais de tous les types de relais électriques et elle évalue leur aptitude à fonctionner dans les conditions prévues de transport, de stockage et dans tous les aspects de leur utilisation opérationnelle. Le présent essai a pour objet de définir une méthode d'essai normalisée pour le brouillard salin.

Električni releji - Preskusi in meritve - 44. del: Korozivna atmosfera zaradi slane meglice

Ta del standarda IEC 63522 se uporablja za preskušanje vseh vrst električnih relejev in vrednotenje njihove zmožnosti delovanja v pričakovanih pogojih med transportom in skladiščenjem ter v vseh vidikih operativne uporabe.
OPOMBA: Primeri električnih relejev za potrebe tega dokumenta vključujejo elektromehanske releje, releje reed, kontakte reed, stikala reed, polprevodniške releje, časovne releje in njihove tehnološke kombinacije.
Cilj tega preskusa je določiti standardno preskusno metodo za slano meglico.

General Information

• Status: Published
• Public Enquiry End Date: 31-Jul-2024
• Publication Date: 25-Jun-2025
• ICS: 29.120.70 - Relays
• Technical Committee: ISS EIT.ERE - All-or-nothing electrical relays
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 11-Jun-2025
• Due Date: 16-Aug-2025
• Completion Date: 26-Jun-2025
• Ref Project: EN IEC 63522-44:2025 - Electrical relays - Tests and measurements - Part 44: Corrosive atmosphere due to salt mist

Overview

EN IEC 63522-44:2025 - published by CLC/CENELEC and identical to IEC 63522-44:2025 - specifies a standardized salt‑mist (salt spray) test method for electrical relays. The standard is used to assess the ability of relays (electromechanical, reed, solid‑state, time relays and combinations) to withstand corrosive atmospheres encountered during transportation, storage and operational use. The test procedure refers to IEC 60068‑2‑11 (Test Ka) and IEC 60068‑2‑52 (Test Kb) and is intended to evaluate protective coatings, contact integrity and overall relay durability in salt‑laden environments.

Key topics and requirements

• Scope and purpose
  • Assess suitability of relays for use/storage in salt‑laden atmospheres and evaluate protective coatings.
• Referenced salt‑mist tests
  • Test Ka (IEC 60068‑2‑11) - continuous salt mist; preferred method. Test conditions are to be specified by the manufacturer.
  • Test Kb (IEC 60068‑2‑52) - cyclic salt mist (sodium chloride solution); alternative method.
• Preconditioning
  • Optional dry heat: 55 °C ± 2 K for 48 h.
  • Optional damp heat: 25 °C ± 5 K, 91–95% RH for 48 h.
• Test procedure structure
  • Preconditions → Exposure (Ka or Kb) → Recovery.
  • Manufacturer must specify certain test conditions (e.g., solution concentration, duration, cycle parameters).
• Evaluation and acceptance
  • External visual inspection, internal visual inspection, final functional checks and measurements (e.g., contact resistance, dielectric strength) as defined in companion parts.
  • Detailed test report requirements for reproducibility and traceability.

Practical applications and users

EN IEC 63522-44:2025 is directly applicable for:

• Relay manufacturers validating product robustness against marine/coastal, industrial and roadside environments.
• Environmental test laboratories performing salt‑spray/corrosion qualification.
• OEMs and system integrators specifying relay components for power, rail, marine, telecommunications and outdoor control equipment.
• Procurement, QA and compliance teams requiring standardized environmental test evidence for supplier qualification and product acceptance.
• Certification bodies and test houses using consistent methods to compare protective coatings and contact reliability.

Keywords: EN IEC 63522-44:2025, salt mist test, corrosive atmosphere, electrical relays, relay testing standard, environmental testing, IEC 60068‑2‑11, IEC 60068‑2‑52.

Related standards

• EN/IEC 63522-0: General and guidance
• EN/IEC 63522-1: Visual inspection and dimensions
• EN/IEC 63522-4: Dielectric strength test
• EN/IEC 63522-6: Contact‑circuit resistance (voltage drop)
• EN/IEC 63522-7: Functional tests
• EN/IEC 63522-9: Climatic tests
• IEC 60068‑2‑11 and IEC 60068‑2‑52 (salt mist test methods)

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Električni releji - Preskusi in meritve - 44. del: Korozivna atmosfera zaradi slane
meglice
Electrical relays - Tests and measurements - Part 44: Corrosive atmosphere due to salt
mist
Elektrische Relais - Mess- und Prüfverfahren - Teil 44: Salznebel
Relais électriques - Essais et mesurages - Partie 44: Atmosphère corrosive due au
brouillard salin
Ta slovenski standard je istoveten z: EN IEC 63522-44:2025
ICS:
29.120.70 Releji Relays
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63522-44

NORME EUROPÉENNE
EUROPÄISCHE NORM June 2025
ICS 29.120.70
English Version
Electrical relays - Tests and measurements - Part 44: Corrosive
atmosphere due to salt mist
(IEC 63522-44:2025)
Relais électriques - Essais et mesurages - Partie 44: Elektrische Relais - Mess- und Prüfverfahren - Teil 44:
Atmosphère corrosive due au brouillard salin Salznebel
(IEC 63522-44:2025) (IEC 63522-44:2025)
This European Standard was approved by CENELEC on 2025-05-28. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63522-44:2025 E

European foreword
The text of document 94/1133/FDIS, future edition 1 of IEC 63522-44, prepared by TC 94 "Electrical
relays" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2026-06-30
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2028-06-30
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
This document is read in conjunction with EN IEC 63522-0 .
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63522-44:2025 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standard indicated:
IEC 62246-1:2015 NOTE Approved as EN 62246-1:2015 (not modified)
IEC 62246-1-1:2018 NOTE Approved as EN IEC 62246-1-1:2018 (not modified)

Under preparation. Stage at the time of publication: prEN IEC 63522-0:2024.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
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.
NOTE 1  Where an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2  Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cencenelec.eu.
Publication Year Title EN/HD Year
IEC 60068-2-11 - Environmental testing - Part 2-11: Tests - EN IEC 60068-2-11 -
Test Ka: Salt mist
IEC 60068-2-52 - Environmental testing - Part 2-52: Tests - EN IEC 60068-2-52 -
Test Kb: Salt mist, cyclic (sodium chloride
solution)
2 3
IEC 63522-0 — Electrical relays - Tests and Measurements EN IEC 63522-0 —
- Part 0: General and Guidance
4 5
IEC 63522-1 — Electrical relays - Tests and measurements EN IEC 63522-1 —
- Part 1: Visual inspection and check of
dimensions
6 7
IEC 63522-4 — Electrical relays - Tests and measurements EN IEC 63522-4 —
- Part 4: Dielectric strength test
IEC 63522-6 2025 Electrical relays - Tests and measurements EN IEC 63522-6 2025
- Part 6: Contact-circuit resistance or
voltage drop
IEC 63522-7 2025 Electrical relays - Tests and measurements EN IEC 63522-7 2025
- Part 7: Functional tests
IEC 63522-9 2025 Electrical relays - Tests and measurements EN IEC 63522-9 2025
- Part 9: Climatic tests
IEC 63522-11 2025 Electrical relays - Tests and measurements EN IEC 63522-11 2025
- Part 11: Enclosure protection and degree
of protection
Under preparation. Stage at the time of publication: IEC CDV 63522-0:2024.
Under preparation. Stage at the time of publication: prEN IEC 63522-0:2024.
Under preparation. Stage at the time of publication: IEC FDIS 63522-1:2024.
Under preparation. Stage at the time of publication: FprEN IEC 63522-1:2025.
Under preparation. Stage at the time of publication: IEC FDIS 63522-4:2024.
Under preparation. Stage at the time of publication: FprEN IEC 63522-4:2024.
IEC 63522-44 ®
Edition 1.0 2025-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Electrical relays – Tests and measurements –

Part 44: Corrosive atmosphere due to salt mist

Relais électriques – Essais et mesurages –

Partie 44: Atmosphère corrosive due au brouillard salin

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.120.70  ISBN 978-2-8327-0364-9

– 2 – IEC 63255-44:2025 © IEC 2025
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Test procedure . 6
4.1 Purpose . 6
4.2 Procedure . 6
4.2.1 Preconditions . 6
4.2.2 Test . 6
4.2.3 Recovery . 6
4.3 Conditions to be specified . 7
4.3.1 The conditions to be specified for test Ka . 7
4.3.2 The conditions to be specified for test Kb . 7
5 Evaluation . 7
5.1 General overview . 7
5.1.1 External visual inspection . 7
5.1.2 Final checking . 7
5.1.3 Internal visual inspection . 7
5.2 Test report . 8
Bibliography . 9

IEC 63255-44:2025 © IEC 2025 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL RELAYS –
TESTS AND MEASUREMENTS –
Part 44: Corrosive atmosphere due to salt mist

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of r
...