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

SC 121A

Low-voltage switchgear and controlgear

 
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SC 121A Subcommittee(s) and/or Working Group(s)

Label
Title
Working Groups
WG 1Insulation coordination
WG 2Contactors, starters and similar equipment
WG 3Control switches
WG 10Constructional requirements and environmental aspects
WG 17Product data and properties for information exchange
Project Teams
PT 60947-9-1Low-voltage switchgear and controlgear - Arc quenching devices.
Maintenance Teams
MT 5General rules
MT 6Switches, disconnectors and similar equipment
MT 7EMC aspects and built-in electronics
MT 8Terminal blocks and clamping units
MT 9Circuit-breakers
MT 18Transfer switching equipment (TSE)
Joint Working Groups
JWG 22Atmospheric and altitude correction Managed by TC 42
JWG 14Energy Efficiency in Industrial Automation (EEIA) Managed by TC 65
Advisory Groups
AG 4Advisory Group of SC 121A
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SC 121A Membership

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P/O Status
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IEC Membership
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AR
O-Member
Full Member
AU
P-Member
Full Member
AT
P-Member
Full Member
BY
O-Member
Full Member
BE
O-Member
Full Member
BR
P-Member
Full Member
BG
O-Member
Full Member
CA
P-Member
Full Member
CN
P-Member
Full Member
HR
O-Member
Full Member
CZ
P-Member
Full Member
DK
P-Member
Full Member
EG
P-Member
Full Member
FI
P-Member
Full Member
FR
P-Member
Full Member
DE
P-Member
Full Member
GR
O-Member
Full Member
HU
O-Member
Full Member
IN
P-Member
Full Member
ID
P-Member
Full Member
IR
O-Member
Full Member
IE
P-Member
Full Member
IL
P-Member
Full Member
IT
P-Member
Full Member
JP
P-Member
Full Member
KR
P-Member
Full Member
MY
O-Member
Full Member
MX
O-Member
Full Member
NL
P-Member
Full Member
NZ
O-Member
Full Member
NO
O-Member
Full Member
OM
O-Member
Full Member
PH
O-Member
Full Member
PL
O-Member
Full Member
PT
P-Member
Full Member
RO
O-Member
Full Member
RU
P-Member
Full Member
SA
O-Member
Full Member
RS
P-Member
Full Member
SG
O-Member
Full Member
SK
O-Member
Full Member
SI
P-Member
Full Member
ZA
P-Member
Full Member
ES
P-Member
Full Member
SE
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CH
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TH
O-Member
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TR
O-Member
Full Member
UA
O-Member
Full Member
GB
P-Member
Full Member
US
P-Member
Full Member

Facts and figures

Secretariat
France
Participating countries
29
Observer Countries
22
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SC 121A Officers

Chair
Mr Karl Hiereth (DE)
Term of office : 2020-08

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Secretary
Mr Eric Bettega (FR)

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IEC Central Office Contacts

Technical Officer
Mr Damien Lee

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Administrative Assistant
Ms Amelyn Ching

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Administrative Assistant
Ms Jia Min Ng

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Editor
Ms Mélanie Ardiri

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SC 121A Liaisons

Committee
Description
Liaison Member
Internal IEC Liaison
TC 2Rotating machinery 
TC 3Information structures and elements, identification and marking principles, documentation and graphical symbols 
SC 3CGraphical symbols for use on equipmentMr Yoshikazu Seki
SC 3DProduct properties and classes and their identificationMr Hiroshi Murayama
Mr Reinhard Nerke
TC 18Electrical installations of ships and of mobile and fixed offshore units 
SC 22GAdjustable speed electric drive systems incorporating semiconductor power converters 
SC 22HUninterruptible power systems (UPS) 
TC 31Equipment for explosive atmospheresMr Otto Walch
SC 32BLow-voltage fusesMr Michael Altenhuber
SC 32CMiniature fusesMr Dieter Seidl
SC 34ALamps 
SC 34CAuxiliaries for lamps 
TC 44Safety of machinery - Electrotechnical aspects 
TC 64Electrical installations and protection against electric shock 
TC 65Industrial-process measurement, control and automationMr Joseph BRIANT
SC 65CIndustrial networks 
SC 65EDevices and integration in enterprise systemsMr Joseph BRIANT
TC 77Electromagnetic compatibilityMr Bernd Jäkel
SC 77AEMC - Low frequency phenomena 
TC 82Solar photovoltaic energy systemsMr Greg J. Ball
TC 85Measuring equipment for electrical and electromagnetic quantitiesMr Laurent Oberle
TC 89Fire hazard testingMr Jean-Marie Maldjian
TC 94All-or-nothing electrical relaysMr John R. Kovacik
TC 109Insulation co-ordination for low-voltage equipment 
TC 111Environmental standardization for electrical and electronic products and systems 
TC 112Evaluation and qualification of electrical insulating materials and systems 
SC 121BLow-voltage switchgear and controlgear assemblies 
CIS/BInterference relating to industrial, scientific and medical radio-frequency apparatus, to other (heavy) industrial equipment, to overhead power lines, to high voltage equipment and to electric traction