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



Reference HD 348 S7:1998
Title High-voltage alternating-current circuit-breakers
Project Number 8528
Abstract/Scope Applies to a.c. circuit-breakers designed for indoor or outdoor installation and operation at frequencies up to and including 60 Hz on systems having voltages above 1 000 V. Applies only to three-pole circuit-breakers for use in three-phase systems and single-pole circuit-breakers for use in single-phase systems. Two-pole circuit-breakers for use in single-phase systems are subject to agreement between manufacturer and user. Also applies to the operating devices of circuit-breakers and their auxiliary equipment. However, circuit-breakers with a closing mechanism for dependent manual operation are not covered since a rated short-circuit-making current cannot be specified, and dependent manual operation may be objectionable because of safety considerations. Does not cover circuit-breakers intended for use on motive power units of electrical traction equipment, or circuit-breakers for use with overhead lines which include series capacitors.


Current Stage code 9599
Current Stage code date 2002-07-02
Current Stage code deadline  
Deadline date for vote  


Order Voucher  


IEC Technical Body IEC/SC 17A
Reference Document IEC 60056:1987 (MOD) + A3:1996 (MOD)
ICS 29.120.40 - Switches
Keywords Circuit-breaker; HV; AC
Note D112/040: HD withdrawn
Special National Condition(s) BE


Categories - Aspects
Product Life Cycle


Deadline Date
9599 2002-07-02    
9562 2002-02-28 2002-07-02  
9520 2001-10-26 2002-01-25  
9500 2001-09-25 2002-03-25  
6060 1998-04-03 1999-01-01  
5099 1998-04-01 1998-05-01  
5062 1998-01-27 1998-04-01  
5020 1997-04-25 1997-10-31  
1090 1997-04-14 1997-10-14  
1021 1997-02-25 1997-03-31  
1000 1997-02-25    

Implementation Dates

date of Ratification (DOR) (1) 1998-04-01
date of Availability (DAV) (2) 1998-04-03
date of Announcement (DOA) (3) 1998-07-01
date of Publication (DOP) (4) 1999-01-01
date of Withdrawal (DOW) (5) 1999-01-01


Supersedes HD 348 S6:1995
Superseded by EN 62271-100:2001
Normative reference (6) IEC 60050-151:1978
IEC 60050-441:1984
IEC 60050-604:1987
IEC 60060-1:1973
EN 60068-2-5:1999
HD 323.2.17 S4:1990
HD 540.2 S1:1991
IEC 60077:1968
EN 60129:1994
IEC 60137:1984
IEC 60185:1966
IEC 60296:1982
IEC 60376:1971
IEC 60427:1973
HD 448 S4:1996

(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.