IEC/SC 121B - Low-voltage switchgear and controlgear assemblies
To prepare international standards covering assemblies which are combinations of one or more pieces of low-voltage switchgear and controlgear equipment, not exceeding 1 kV a.c. or 1,5 kV d.c. together with associated control and/or power equipment, measuring, signalling, protective, regulating equipment, etc.
Ensembles d'appareillages à basse tension
Préparer des normes internationales applicables aux ensembles constitués d'un ou de plusieurs éléments d'appareillage basse tension inférieure à 1 kV en courant alternatif ou 1,5 kV en courant continu, ainsi que l'équipement connexe de commande de manoeuvre, de mesure, de signalisation, de protection, de régulation, etc.
General Information
Frequently Asked Questions
IEC/SC 121B is a Subcommittee within the International Organization for Standardization (ISO). It is named "Low-voltage switchgear and controlgear assemblies" and is responsible for: To prepare international standards covering assemblies which are combinations of one or more pieces of low-voltage switchgear and controlgear equipment, not exceeding 1 kV a.c. or 1,5 kV d.c. together with associated control and/or power equipment, measuring, signalling, protective, regulating equipment, etc. This committee has published 16 standards.
IEC/SC 121B develops ISO standards in the area of Information technology. The scope of work includes: To prepare international standards covering assemblies which are combinations of one or more pieces of low-voltage switchgear and controlgear equipment, not exceeding 1 kV a.c. or 1,5 kV d.c. together with associated control and/or power equipment, measuring, signalling, protective, regulating equipment, etc. Currently, there are 16 published standards from this subcommittee.
The International Organization for Standardization (ISO) is an independent, non-governmental international organization that develops and publishes international standards. Founded in 1947 and headquartered in Geneva, Switzerland, ISO brings together experts from 170+ member countries to share knowledge and develop voluntary, consensus-based standards that support innovation and provide solutions to global challenges.
A Subcommittee (SC) in ISO operates under a Technical Committee and focuses on a specific subset of the TC's scope. Subcommittees develop standards and technical specifications in their specialized area, reporting to their parent Technical Committee. They may also have working groups for detailed technical work.