H01H33/70 - CPC Classification Index

ClassID:

202959 ⎘

H01H33/70 - 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

Sub-classes:

H01H33/7007 » {wherein the flow is a function of the current being interrupted} 1
H01H33/7015 » {characterised by flow directing elements associated with contacts } 27
H01H33/72 » having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber 16
H01H33/76 » wherein arc-extinguishing gas is evolved from stationary parts; Selection of material therefor 14
H01H33/80 » flow of arc-extinguishing fluid from a pressure source being controlled by a valve 0
H01H33/86 » the flow of arc-extinguishing fluid under pressure from the contact space being controlled by a valve 10
H01H33/88 » the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts 25
H01H33/98 » the flow of arc-extinguishing fluid being initiated by an auxiliary arc or a section of the arc, without any moving parts for producing or increasing the flow 7

Recent Application in this class:

20210398761

2021-12-23

Contact device

20210391134

2021-12-16

Contact device

20210257173

2021-08-19

Switching device with at least two intercommunicating extinguishing areas

20210217567

2021-07-15

Interrupter assembly

20190244776

2019-08-08

Contact piece for a high-voltage circuit breaker and method for producing same

20170301498

2017-10-19

Circuit breaker having closing resistor

20160005559

2016-01-07

Gas circuit breaker

20140224772

2014-08-14

Circuit breaker

20140078648

2014-03-20

Gas insulated switchgear

#10

20130119022

2013-05-16

Medium and high-voltage electric switch with return on closure and an insertion device for inserting a resistance

#11

20110056915

2011-03-10

Valve for gas circuit breaker and gas circuit breaker with the same

#12

20080011719

2008-01-17

Heavy-duty circuit-breaker with sealing against hot gas

#13

20070158310

2007-07-12

Gas exhaust for circuit breaker