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



Reference EN 60079-18:2009
Title Explosive atmospheres - Part 18: Equipment protection by encapsulation "m"
Project Number 21225
Abstract/Scope IEC 60079-18:2009 gives the specific requirements for the construction, testing and marking of electrical equipment, parts of electrical equipment and Ex components with the type of protection encapsulation 'm' intended for use in explosive gas atmospheres or explosive dust atmospheres. This part applies only for encapsulated electrical equipment, encapsulated parts of electrical equipment and encapsulated Ex components where the rated voltage does not exceed 11 kV. The significant technical changes with respect to the previous edition are as follows: - Incorporation of level of protection 'mc' - Equipment protection levels (EPL Ma, Ga, Da, Mb, Gb, Db, Gc, Dc) - Incorporation of the dust requirements - Incorporation of switching contacts for level of protection 'ma'. This publication is to be read in conjunction with IE C 60079-0:2007. NEW! IEC 60079-18:2009 is also available as IEC Standards+ 60079-18:2009 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. The contents of the corrigendum of June 2009 have been included in this copy.


Current Stage code 6060
Current Stage code date 2009-12-04
Current Stage code deadline 2010-07-01
Deadline date for vote  


Directive(s) ATEX (94/9/EC), TDG (2008/68/EC)
Order Voucher  


IEC Technical Body IEC/TC 31
Reference Document IEC 60079-18:2009 (EQV) + corrigendum Jun. 2009 (EQV)
ICS 29.260.20 - Electrical apparatus for explosive atmospheres
Keywords Explosive; Atmosphere; Protection; Encapsulation "m"
Note Supersedes EN 60079-18:2004 (+ corr. 2006) and EN 61241-18:2004
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2009-12-04 2010-07-01 export to doc file  EN  FR  DE
5099 2009-10-01 2009-12-01  
5061 2009-08-27 2009-10-01  
5060 2009-03-24 2009-04-07 export to doc file  EN
5020 2009-01-16 2009-03-20  
3090 2007-09-28 2008-03-31  
5060 2007-09-24 2007-10-08 export to doc file  EN
5020 2007-04-20 2007-09-21  
1090 2007-04-17 2007-04-20  

Implementation Dates

date of Ratification (DOR) (1) 2009-10-01
date of Availability (DAV) (2) 2009-12-04
date of Announcement (DOA) (3) 2010-01-01
date of Publication (DOP) (4) 2010-07-01
date of Withdrawal (DOW) (5) 2012-10-01


Supersedes EN 60079-18:2004
EN 60079-18:2004/corrigendum Apr. 2006
EN 61241-18:2004
Superseded by FprEN 60079-18:2013
Normative reference (6) ANSI/UL 746B:2000
ANSI/UL 248-1:1995
ISO 62:1999
EN 60079-0:2009
EN 60079-7:2007
EN 60079-11:2007
EN 60079-15:2010
EN 60079-26:2007
EN 60079-31:2009
EN 60127-1:2006
EN 60243-1:1998
EN 60691:2003
EN 60730-2-9:2010
EN 60738-1:2006
EN 61241-11:2006
EN 61558-2-6:2009
EN 62326-4-1:1997

(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.