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
Project Teams
PT 62626Specific requirements for enclosed switch disconnectors for onerous applications in the chemical and similar industries
PT 62683Low-voltage switchgear and controlgear - Product data and properties for information exchange
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
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
BE
P-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
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
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
P-Member
Full Member
CH
P-Member
Full Member
TH
O-Member
Full Member
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
30
Observer Countries
18
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SC 121A Officers

Chairman
Mr Karl Hiereth (DE)
Term of office : 2017-08

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Secretary
Mr Eric Bettega (FR)

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Technical Officer
Mr Damien Lee

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SC 121A Liaisons

Committee
Description
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 equipment
SC 3DProduct properties and classes and their identification
TC 18Electrical installations of ships and of mobile and fixed offshore units
TC 22Power electronic systems and equipment
SC 22GAdjustable speed electric drive systems incorporating semiconductor power converters
SC 22HUninterruptible power systems (UPS)
SC 23ECircuit-breakers and similar equipment for household use
TC 31Equipment for explosive atmospheres
SC 32BLow-voltage fuses
SC 32CMiniature fuses
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 automation
SC 65CIndustrial networks
SC 65EDevices and integration in enterprise systems
TC 77Electromagnetic compatibility
SC 77AEMC - Low frequency phenomena
TC 82Solar photovoltaic energy systems
TC 85Measuring equipment for electrical and electromagnetic quantities
TC 89Fire hazard testing
TC 94All-or-nothing electrical relays
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