H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
H01H47/001—Functional circuits, e.g. logic, sequencing, interlocking circuits
Dispositif de controle du demarrage d'une machine dangereuse et de protection au voisinage d'une telle machine et procede de demarrage d'une telle machine