International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 60079-25:2004
Title Electrical apparatus for explosive gas atmospheres - Part 25: Intrinsically safe systems
Project Number 14936
Abstract/Scope Contains the specific requirements for construction and assessment of intrinsically safe electrical systems, type of protection "i", intended for use in explosive athmospheres in Group II locations.


Current Stage code 6060
Current Stage code date 2004-01-29
Current Stage code deadline 2004-09-01
Deadline date for vote  


Directive(s) ATEX (94/9/EC)
Order Voucher  


IEC Technical Body IEC/SC 31G
Reference Document IEC 60079-25:2003 (EQV)
ICS 29.260.20 - Electrical apparatus for explosive atmospheres
Keywords Explosive atmosphere; Gas; Intrinsic safety system
Note Supersedes EN 50039:1980 * Corrigendum to EN issued April 2006 * Superseded by EN 60079-25:2010
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2004-01-29 2004-09-01 export to doc file  EN
5099 2003-12-02 2004-02-01  
5091 2003-09-23 2003-12-02  
5062 2003-08-25 2003-09-23  
5020 2003-05-02 2003-07-04  
4099 2002-11-21 2002-11-30  
4060 2002-05-23 2002-10-23  
4020 2001-12-14 2002-05-17  
3099 2001-12-11 2001-12-14  

Implementation Dates

date of Ratification (DOR) (1) 2003-12-02
date of Availability (DAV) (2) 2004-01-29
date of Announcement (DOA) (3) 2004-03-01
date of Publication (DOP) (4) 2004-09-01
date of Withdrawal (DOW) (5) 2006-12-01


Supersedes EN 50039:1980
Superseded by EN 60079-25:2010
Normative reference (6) HD 588.1 S1:1991
EN 60079-0:2006
IEC 60079-11:1999
EN 60079-14:2003

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.