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Filing date
Publication date
Application filedfiledCritical
Publication of BE694604ApublicationCriticalpatent/BE694604A/xx
H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
H01H33/02—Details
H01H33/59—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle
H01H33/596—Circuit arrangements not adapted to a particular application of the switch and not otherwise provided for, e.g. for ensuring operation of the switch at a predetermined point in the ac cycle for interrupting dc
