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



Reference EN 60420:1993
Title High-voltage alternating current switch-fuse combinations
Project Number 2999
Abstract/Scope This standard applies to three-pole units for public and industrial distribution systems which are functional assemblies of switches including switch-disconnectors and current-limiting fuses and thus able to interrupt: -any load current up to the rated breaking current of the switch; -any over-current up to the rated short-circuit breaking current of the combination by which automatic interruption is initiated. This standard applies to combinations designed with rated voltages above 1 kV and below 52 kV for use on three-phase alternating current systems of either 50 Hz or 60 Hz.


Current Stage code 6060
Current Stage code date 1993-08-30
Current Stage code deadline 1994-04-01
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/SC 17A
Reference Document IEC 60420:1990 (EQV)
Keywords Switch; HV; Switch-fuse combination
Note Superseded by EN 62271-105:2003
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 1993-08-30 1994-04-01 export to doc file  EN
5099 1993-07-06 1993-08-06  
5020 1993-01-18 1993-04-30  
1599 1992-12-11 1993-06-11  
1520 1992-04-24 1992-09-01  

Implementation Dates

date of Ratification (DOR) (1) 1993-07-06
date of Availability (DAV) (2) 1993-08-30
date of Announcement (DOA) (3) 1993-10-01
date of Publication (DOP) (4) 1994-04-01
date of Withdrawal (DOW) (5) 1994-04-01


Superseded by EN 62271-105:2003
Normative reference (6) IEC 60050-151:1978
IEC 60050-441:1984
HD 348 S7:1998
EN 60129:1994
IEC 60137:1984
HD 355.1 S3:1995
EN 60282-1:1993
corr. December 1997
HD 187 S4:1989
IEC 60466:1987
HD 448 S4:1996
IEC 60787:1983

(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.