Vacuum switches

Introduced: September 1968

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

Of 5 combined children, 4 exist in both systems.

1 codes are CPC-only extensions.

IPC defines codes here since 2000.

Child Classifications

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H01H 33/6606 +1 CPC CPC only CPC only
H01H 33/662 Housings or protective screens since 2000 +3 CPC IPC+CPC Available in IPC and CPC
H01H 33/664 Contacts; Arc-extinguishing means, e.g. arcing rings since 2000 +7 CPC IPC+CPC Available in IPC and CPC
H01H 33/666 Operating arrangements since 2000 +6 CPC IPC+CPC Available in IPC and CPC
H01H 33/668 Means for obtaining or monitoring the vacuum since 2000 +2 CPC IPC+CPC Available in IPC and CPC