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


Low-voltage switchgear and controlgear assemblies



Reference EN 61439-6:2012
Title Low-voltage switchgear and controlgear assemblies - Part 6: Busbar trunking systems (busways)
Project Number 22993
Abstract/Scope IEC 61439-6:2012 lays down the definitions and states the service conditions, construction requirements, technical characteristics and verification requirements for low voltage BTS (see 3.101) as follows: - BTS for which the rated voltage does not exceed 1 000 V in case of a.c. or 1 500 V in case of d.c.; - BTS intended for use in connection with the generation, transmission, distribution and conversion of electric energy, and for the control of electric energy consuming equipment; - BTS designed for use under special service conditions, for example in ships, in rail vehicles, and for domestic applications (operated by unskilled persons), provided that the relevant specific requirements are complied with; - BTS designed for electrical equipment of machines. Supplementary requirements for BTS forming part of a machine are covered by the IEC 60204 series. This first edition of IEC 61439-6 cancels and replaces the third edition of IEC 60439-2 (2000) and its Amendment 1 (2005), and constitutes a technical revision. This edition of IEC 61439-6 includes the following significant technical changes with respect to the latest edition of IEC 60439-2: - alignment on the second edition of IEC 61439-1 (2011) regarding the structure and technical content, as applicable; - introduction of new verifications, accordingly; - correction of inconsistencies in resistance, reactance and impedance measurements and calculations; - numerous editorial improvements.


Current Stage code 6060
Current Stage code date 2012-08-31
Current Stage code deadline 2013-03-27
Deadline date for vote  


Directive(s) LVD (2006/95/EC), EMC (2004/108/EC)
Order Voucher  


IEC Technical Body IEC/SC 17D
Reference Document IEC 61439-6:2012 (EQV)
ICS 29.130.20 - Low voltage switchgear and controlgear
Keywords Low-voltage; Switchgear; Controlgear; Busbar; Trunking
Note Supersedes EN 60439-2:2000 + A1:2005 * Initially handled by CLC/TC 17D (dormant)
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2012-08-31 2013-03-27 export to doc file  EN  FR  DE
5099 2012-06-27 2012-07-25  
5060 2012-04-23 2012-05-14 export to doc file  EN
5020 2012-02-17 2012-04-20  
3090 2010-12-17 2011-05-31  
5060 2010-11-02 2010-11-16 export to doc file  EN
5020 2010-05-28 2010-10-29  
1090 2010-05-25 2010-05-28  

Implementation Dates

date of Ratification (DOR) (1) 2012-06-27
date of Availability (DAV) (2) 2012-08-31
date of Announcement (DOA) (3) 2012-09-27
date of Publication (DOP) (4) 2013-03-27
date of Withdrawal (DOW) (5) 2015-06-27


Supersedes EN 60439-2:2000
EN 60439-2:2000/A1:2005
Superseded by  
Normative reference (6) ISO 834-1:1999
EN 60332-3-10:2009
EN 60439-2:2000
EN 61439-1:2011
IEC 61786:1998

(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.