| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 06/24/1997 | US5641059 Actuator for a switch having independently rotatable halfshafts |
| 06/19/1997 | WO1997022129A1 Attachment means for mounting a resistor in a sealing casing |
| 06/19/1997 | DE19547098A1 Power switch with arc-quenching chamber and switch-on resistor |
| 06/18/1997 | EP0779638A1 High voltage circuit breaker with a reduced driving energy |
| 06/18/1997 | EP0779637A2 Circuit breaker with closing resistor |
| 06/18/1997 | EP0779636A2 Contact material for vacuum interrupter and method for producing the same |
| 06/18/1997 | CN2256584Y Safety air pressure type air load switch |
| 06/18/1997 | CN2256583Y Hydraulic driving mechanism for high voltage circuit breaker |
| 06/17/1997 | CA2192029A1 Power circuit-breaker having a closing resistor |
| 06/11/1997 | EP0777906A1 Circuit breaker arrangement for protection against electrical arcs |
| 06/11/1997 | CN1151605A Electrical circuit breaker with gas insulation and self-extinguishing expansion |
| 06/10/1997 | US5638296 Intelligent circuit breaker providing synchronous switching and condition monitoring |
| 06/10/1997 | CA2066194C Earthing switch for a metal-encapsulated high-voltage switchboard plant insulated by pressurised gas |
| 06/04/1997 | EP0777307A1 Pseudo-spark switch |
| 06/04/1997 | EP0729638B1 Electrical gas-blast switch |
| 06/03/1997 | US5636134 Intelligent circuit breaker providing synchronous switching and condition monitoring |
| 06/03/1997 | US5635692 Contact arrangement for electrical apparatus |
| 05/28/1997 | EP0776021A2 Electric switching device |
| 05/22/1997 | WO1997018569A1 Electrical actuator means |
| 05/21/1997 | EP0691028B1 Switching component, especially safety or power switch |
| 05/21/1997 | EP0587611B1 Dc relay device |
| 05/21/1997 | CN1150349A Insulated type switching device |
| 05/14/1997 | EP0720774B1 High-voltage power switch with a cooling device for cooling the quenching gas |
| 05/14/1997 | CN1034891C Contact material for vacuum circuit breakers |
| 05/13/1997 | US5629869 Intelligent circuit breaker providing synchronous switching and condition monitoring |
| 05/13/1997 | US5629506 Low voltage AC contactor including high recovery voltage gas system |
| 05/13/1997 | US5628449 Method of welding a carbon steel and an austenitic stainless steel together and resultant structure |
| 05/07/1997 | EP0772215A1 Isolating switch, in particular load break isolating switch assembly for medium voltage |
| 05/07/1997 | EP0772214A2 Electrical switchgear |
| 05/07/1997 | DE19547873C1 Load changeover device for stage-transformer step switch |
| 05/06/1997 | US5627415 System and method for opening/closing circuit breakers |
| 05/03/1997 | CA2189322A1 Electrical switching device |
| 05/02/1997 | EP0771057A1 Metal clad, medium voltage switchgear |
| 05/02/1997 | EP0771018A2 Magnetic actuator arrangement |
| 05/02/1997 | EP0771016A2 Motion conversion arrangement |
| 04/30/1997 | DE19539997A1 HV switch for connection to long overhead line spans |
| 04/30/1997 | DE19539535A1 Vacuum interrupter internal pressure monitoring method |
| 04/30/1997 | CN2253519Y Vacuum switching tube |
| 04/30/1997 | CN2253518Y Vacuum switching tube |
| 04/30/1997 | CN1148904A Insulating support for vacuum switch tubes |
| 04/30/1997 | CN1148903A Power switch assembly |
| 04/24/1997 | WO1997015061A1 Electromagnetic operating device |
| 04/23/1997 | CN1148255A 电流断路器 Circuit Breakers |
| 04/17/1997 | DE19642031A1 Actuation mechanism for electrical circuit-breaker |
| 04/16/1997 | EP0768692A1 Autoexpansion circuit breaker with insulating gas |
| 04/16/1997 | CN2252399Y High-tension vacuum circuit breaker mechanical interlock protector |
| 04/16/1997 | CN1147878A Compressed-gas circuit breaker with a nozzle made of insulating material |
| 04/16/1997 | CN1147682A Gas circuit breaker |
| 04/03/1997 | WO1997012383A1 High power switching arrangement |
| 04/02/1997 | EP0766278A2 Circuit breaker |
| 04/02/1997 | EP0766277A2 Insulated type switching device |
| 04/02/1997 | EP0720772B1 Power switch with an arc quenching device |
| 04/02/1997 | CN2251195Y Tri-positioning vacuum load switch |
| 04/02/1997 | CN1146825A Drive arrangement for vacuum power circuit breakers, in particular in a tri-polar configuration |
| 04/01/1997 | US5616898 Medium-voltage or high-voltage circuit-breaker |
| 03/26/1997 | CN1146256A Device for tensioning the cut-in spring in actuator units for circuit breakers, in particular vacuum circuit breakers |
| 03/26/1997 | CN1146058A Power switch |
| 03/26/1997 | CN1146012A Method and system for determining density of insulating gas in electrical apparatus |
| 03/20/1997 | WO1997010609A1 Electrical switch |
| 03/20/1997 | DE19534403A1 Opto-electronic transducer based monitor for arcing in switch-gear |
| 03/19/1997 | EP0763841A2 Contact arrangement for vacuum switch |
| 03/19/1997 | EP0763840A2 Metal-clad gas insulated power switch |
| 03/19/1997 | EP0763250A1 Compressed-gas circuit breaker with a nozzle made of insulating material |
| 03/19/1997 | EP0763249A1 Power switch module |
| 03/19/1997 | EP0763248A1 Insulating support for vacuum switch tubes |
| 03/19/1997 | CN1034304C Opening and closing mechanism for a medium or high voltage electrical switch |
| 03/19/1997 | CN1034303C Switch operating mechanism |
| 03/18/1997 | US5612523 Vacuum circuit-breaker and electrode assembly therefor and a manufacturing method thereof |
| 03/13/1997 | WO1997009729A1 Vacuum valve |
| 03/13/1997 | DE19601053C1 Outdoor HV circuit-breaker |
| 03/12/1997 | EP0762450A1 Method for monitoring an on-load switch for a tap changer |
| 03/12/1997 | CN2249446Y Reinforced multi-pole magnetic-field contact for vaccum arc suppression chamber |
| 03/12/1997 | CN1144969A Medium voltage gas isolation circuit breaker |
| 03/11/1997 | US5610381 Compression gas puffer type circuit breaker |
| 03/06/1997 | WO1997008725A1 Power circuit-breaker with current transformers and data store |
| 03/06/1997 | WO1997008723A1 High voltage hybrid circuit-breaker |
| 03/05/1997 | CN1144391A Vacuum interrupter with single internal assembly for generating axial magnetic field |
| 03/04/1997 | US5608198 Circuit breaker arrangement for protection against electrical arcs |
| 02/27/1997 | WO1997007519A1 Power switch equipped with a locking device |
| 02/26/1997 | EP0759629A1 Circuit breaker with closing resistor and insertion device |
| 02/26/1997 | CN1144012A Two-step operating mechanism for combined interrupter disconnect switch |
| 02/26/1997 | CN1034145C Hydraulic operation mechanics of high-voltage breaker |
| 02/19/1997 | EP0758794A1 Device for monitoring the vacuum of a vacuum switch |
| 02/19/1997 | CN2247869Y Automatic constant pressure device for hydraulic operation mechanism of high voltage cutout |
| 02/19/1997 | CN1143257A Buffer gas breaker |
| 02/19/1997 | CN1034087C Process for manufacturing contact material for vacuum circuit breakers |
| 02/18/1997 | US5604340 Gas insulated switchgear insertion resistor and main contacts operating mechanism having time delay feature |
| 02/18/1997 | CA2095895C Whip for high-voltage disconnector |
| 02/13/1997 | WO1997005635A1 Method of monitoring the quality of filler gases, in particular sulphur hexafluoride, in gas-filled installations |
| 02/13/1997 | WO1997005500A1 Functional test process for a mechanical switching element |
| 02/13/1997 | CA2227760A1 Functional test process for a mechanical switching element |
| 02/12/1997 | EP0758138A1 Circuit breaking fuse and disconnect switch |
| 02/12/1997 | EP0758137A1 Circuit breaking device |
| 02/12/1997 | EP0758136A2 DC circuit breaking device |
| 02/12/1997 | CN1142675A 电路断路器 Circuit breaker |
| 02/11/1997 | US5601456 Bus bar connector |
| 02/11/1997 | CA2034305C Low overvoltage reactance circuit-breaker |
| 02/09/1997 | CA2182821A1 Circuit breaking device |
| 02/05/1997 | EP0757367A1 Switching system with terminal modules |
| 02/05/1997 | EP0756753A1 Electric switching devices with blow-out channels for arc gases |