H01H33/72 - CPC Classification Index

ClassID:

202972 ⎘

H01H33/72 - CPC Classification

Classification description:

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 having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber

Sub-classes:

H01H33/73 » wherein the break is in air at atmospheric pressure, e.g. in open air 5
H01H33/74 » wherein the break is in gas 43
H01H33/75 » Liquid-break switches, e.g. oil-break 3

Recent Application in this class:

20250029799

ARC EXTINGUISHING SYSTEM FOR CONTACTOR AND CONTACTOR

20240363297

SUB-CONTACT UNIT AND DIRECT CURRENT RELAY INCLUDING SAME

20210110987

Arc extinguishing chamber base of molded case circuit breaker

20200411263

Electric switching unit comprising a filtering device

20190295791

Gas-blast circuit breaker

20180144900

Manufacturing method for foam fuse filler and cartridge fuse

20170229266

ARC-SUPPRESSING GAS BLAST IN PYROTECHNIC DISCONNECT

20170076890

Conduction-breaking device

20160351364

Conduction breaking device

20160315467

Apparatus and method for switching a direct current

20160071673

Switch contact chamber seal

20160071670

Arrangement for an electrical switch element and switch element

20150294820

Self-blast circuit breaker reusing arc heat

20150129554

Circuit breaker bail mechanism

20150129552

Circuit breaker position adjustment system

20150014280

Switchgear arrangement

16555406

Arc chamber venting

16357513

Circuit breaker with enhanced arc extinguishing chamber