IEC/SC 121A - Low-voltage switchgear and controlgear
To prepare international standards for low-voltage switchgear and controlgear equipment for industrial, commercial and similar use rated below or equal to 1 kV a.c. and 1,5 kV d.c.. The scope includes open and enclosed separate items of equipment as well as combinations of items of equipment into complete functional units, electromechanical as well as semiconductor (solid state) equipment. Group Safety Function: Connecting devices, either as separate entities or as integral parts of an end product for connecting external electrical supply conductors, for use with conductor cross-sections above 35 mm2 up to and including 300 mm2.
Appareillage à basse tension
Préparer des normes internationales applicables à l'appareillage à basse tension destiné à des usages industriels, commerciaux et similaires pour des tensions assignées inférieures ou égales à 1 kV en courant alternatif et 1,5 kV en courant continu. Le domaine d'activité comprend les appareils nus et sous enveloppe ainsi que leurs combinaisons en unités fonctionnelles complètes, à la fois pour les équipements électromécaniques ou à semiconducteurs. Fonction groupée de sécurité Dispositifs de connexion, soit en tant qu'éléments distincts ou comme parties intégrantes d'un produit final, principalement destinés à raccorder des conducteurs d'alimentation électrique externe, à utiliser avec des conducteurs de section comprise au-dessus de 35 mm2 et jusqu'à, et y compris, 300 mm2.
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Frequently Asked Questions
IEC/SC 121A is a Subcommittee within the International Organization for Standardization (ISO). It is named "Low-voltage switchgear and controlgear" and is responsible for: To prepare international standards for low-voltage switchgear and controlgear equipment for industrial, commercial and similar use rated below or equal to 1 kV a.c. and 1,5 kV d.c.. The scope includes open and enclosed separate items of equipment as well as combinations of items of equipment into complete functional units, electromechanical as well as semiconductor (solid state) equipment. Group Safety Function: Connecting devices, either as separate entities or as integral parts of an end product for connecting external electrical supply conductors, for use with conductor cross-sections above 35 mm2 up to and including 300 mm2. This committee has published 73 standards.
IEC/SC 121A develops ISO standards in the area of Information technology. The scope of work includes: To prepare international standards for low-voltage switchgear and controlgear equipment for industrial, commercial and similar use rated below or equal to 1 kV a.c. and 1,5 kV d.c.. The scope includes open and enclosed separate items of equipment as well as combinations of items of equipment into complete functional units, electromechanical as well as semiconductor (solid state) equipment. Group Safety Function: Connecting devices, either as separate entities or as integral parts of an end product for connecting external electrical supply conductors, for use with conductor cross-sections above 35 mm2 up to and including 300 mm2. Currently, there are 73 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.