CPC Subgroup
H01H 33/66 Vacuum switches
Full Title
High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid > Vacuum switches
5 direct subcodes
Child Classifications
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- H01H 33/662 Housings or protective screens
- H01H 33/664 Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H 33/666 Operating arrangements
- H01H 33/668 Means for obtaining or monitoring the vacuum