New patented mechanical-electric safety lock for protection of electric equipment and of personnel; typical installations, interlocking of two disconnectors, of circuit heater and two disconnectors, etc.
Dispositif de securite destine a assurer le protection des installations electriques et du personnel
Dispositif de securite destine a assurer le protection des installations electriques et du personnel
Arts et Metiers ; n 142
1932
7 pages
Article (Journal)
French
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