DIFF Subgroup
H01H 33/88 the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
Introduced: September 1968
Full Title
High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid > the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
CPC subdivides this area 3x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- H01H 33/90 this movement being effected by or in conjunction with the contact-operating mechanism +6 CPC IPC+CPC Available in IPC and CPC
- H01H 33/94 this movement being effected solely due to the pressure caused by the arc itself or by an auxiliary arc IPC+CPC Available in IPC and CPC