| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 05/14/2009 | WO2009060508A1 Electromagnetic device |
| 05/14/2009 | US20090120910 Interrupter Unit of an Electrical Switching Device |
| 05/14/2009 | US20090120909 Grounding Disconnector and a Method of Manufacturing Such a Grounding Disconnector |
| 05/14/2009 | US20090120907 switch unit having a circuit breaker and a disconnector with common drive means |
| 05/14/2009 | DE20321748U1 Mittelspannungsschaltanlage Medium voltage switchgear |
| 05/13/2009 | EP2057656A1 Armature |
| 05/13/2009 | CN201238002Y Bistable permanent-magnetic mechanism of asymmetric magnetic circuit |
| 05/13/2009 | CN201238001Y Pouring type pole of miniature vacuum circuit breaker |
| 05/13/2009 | CN201238000Y Pouring type pole of great-current vacuum circuit breaker |
| 05/13/2009 | CN201237999Y Great-current pouring pole type vacuum circuit breaker |
| 05/13/2009 | CN201237997Y Electric control device for double-pole isolation switch of rail traffic |
| 05/13/2009 | CN101432834A Interrupter unit of an electrical switching device |
| 05/13/2009 | CN101432833A Power switch, especially high-current switch |
| 05/13/2009 | CN101432832A Power switch, especially high-current switch |
| 05/13/2009 | CN101431218A Intelligent duplicate supply switching device |
| 05/13/2009 | CN101430986A Outdoor high-voltage permanent magnet type vacuum circuit breaker |
| 05/13/2009 | CN101430974A Assembly device for energy accumulation spring |
| 05/12/2009 | US7531920 Driving circuit |
| 05/07/2009 | WO2009056438A1 High-voltage power switch having rotating switch arc |
| 05/07/2009 | WO2008028672A8 Vacuum circuit breaker |
| 05/06/2009 | EP2056322A1 High voltage power switch |
| 05/06/2009 | EP2056321A1 High-voltage power switch with a rotating light arc |
| 05/06/2009 | CN201233857Y Fuse holder for vacuum contact and fuse device |
| 05/06/2009 | CN201233835Y Phase pole for vacuum contact |
| 05/06/2009 | CN201233834Y Vacuum circuit breaker for gas insulated metal enclosed switch device |
| 05/06/2009 | CN201233833Y Hydraulic operating mechanism for medium/high voltage circuit breaker |
| 05/06/2009 | CN101427334A Procedure for manufacturing an electric contact and according contact for low-, medium-, high- and generator-switches |
| 05/06/2009 | CN101425733A Electromagnetic permanent magnet combined driving apparatus |
| 05/06/2009 | CN101425426A High voltage power switch |
| 05/06/2009 | CN101425425A Fixed side-installed vacuum circuit breaker |
| 05/06/2009 | CN101425424A Vacuum switch tube for helical coil longitudinal magnetic field electrode |
| 05/06/2009 | CN101425423A Vacuum circuit breaker polar and manufacturing method thereof |
| 05/06/2009 | CN101425422A Electric power opening and closing device and gas insulation circuit-breaker |
| 05/06/2009 | CN101425421A Arc-suppressing load switch |
| 05/06/2009 | CN101425404A Permanent magnet type dual electric power conversion switch |
| 05/06/2009 | CN101425403A Pulse excitation circuit |
| 05/06/2009 | CN101425401A Electromagnetic actuator equipped with a mechanical brake of the type with a wound-coil spring |
| 05/06/2009 | CN100485844C High-pressure vacuum circuit breaker |
| 05/06/2009 | CN100485840C Arc arrester and switch having same |
| 05/05/2009 | CA2336518C Protective device and system |
| 04/30/2009 | US20090107957 High-voltage circuit breaker |
| 04/30/2009 | DE19914773B4 Lichtbogenlöschhilfe Arc Help |
| 04/30/2009 | CA2642323A1 High-voltage circuit breaker |
| 04/29/2009 | EP2052448A1 A subsea arrangement |
| 04/29/2009 | CN201230137Y Explosion suppression construction of high pressure vacuum power distribution apparatus for mining |
| 04/29/2009 | CN201229906Y Permanent magnet mechanism for enhancing reaction capability of coil magnetic field to dynamic response of iron core |
| 04/29/2009 | CN201229899Y Modularized spring mechanism cooperating with permanent circuit breaker |
| 04/29/2009 | CN201229898Y Composite insulator for vacuum circuit breaker of electric locomotive engine |
| 04/29/2009 | CN201229897Y Dual moving contact for large capacity vacuum switch |
| 04/29/2009 | CN201229896Y Interlocking control apparatus for opening and closing of outdoor vacuum circuit breaker |
| 04/29/2009 | CN201229895Y Integrated fully enclosed polar post for hand-cart vacuum circuit breaker |
| 04/29/2009 | CN201229894Y Low voltage vacuum circuit breaker for permanent magnet mechanism |
| 04/29/2009 | CN201229893Y A converting switch circuit construction for high voltage DC transmission |
| 04/29/2009 | CN201229892Y Intelligent high voltage dual power supply converting switch |
| 04/29/2009 | CN201229891Y Intelligent high voltage dual power supply converting switch |
| 04/29/2009 | CN201229890Y Combined switch having functions of isolation switch and circuit breaker |
| 04/29/2009 | CN201229889Y Sealing construction for circuit breaker hydraulic operating mechanism energy storage device |
| 04/29/2009 | CN201229888Y Operation connecting apparatus for isolation switch unit |
| 04/29/2009 | CN201229871Y Turbination hanging head for integrally molded circuit breaker porcelain bushing |
| 04/29/2009 | CN201229870Y Electric SF6 switch purification assembling apparatus |
| 04/29/2009 | CN101419879A Middle disposed withdrawn type vacuum circuit breaker |
| 04/29/2009 | CN101419873A Manufacturing process for solid sealed pole of vacuum circuit breaker |
| 04/29/2009 | CN101419871A Intelligent duplicate power supply conversion switch |
| 04/29/2009 | CN101419870A Intelligent duplicate power supply conversion switch |
| 04/28/2009 | CA2298173C Self-disconnecting circuit breaker module, medium voltage, and corresponding energy distribution station |
| 04/23/2009 | WO2009050154A1 Compact common-transmission circuit breaker having two aligned cut-off chambers |
| 04/23/2009 | WO2009049768A1 Hydraulic spring-loaded drive |
| 04/23/2009 | WO2009049669A1 Gas-insulated high-voltage circuit breaker with a relief duct which is controlled by an overflow valve |
| 04/23/2009 | DE19957228B4 Kontaktanordnung für eine Vakuumschaltkammer Contact arrangement for a vacuum interrupter chamber |
| 04/23/2009 | DE19928077B4 Hochspannungsleistungsschalter High-voltage circuit breaker |
| 04/23/2009 | DE102007063447B3 Vakuumschaltröhre Vacuum interrupter |
| 04/23/2009 | DE102007063446B3 Vakuumschaltröhre Vacuum interrupter |
| 04/23/2009 | DE102007063414B3 Kontaktscheibe für eine Vakuumschaltröhre Contact disc for a vacuum interrupter, |
| 04/22/2009 | EP1683171A4 Bypass recloser assembly |
| 04/22/2009 | EP1476887B1 Vacuum interrupter with a switch contact piece |
| 04/22/2009 | CN201226326Y Electronic electromagnetic control apparatus for high voltage vacuum contactor |
| 04/22/2009 | CN201226325Y Spring overtravel apparatus |
| 04/22/2009 | CN201226324Y Vacuum circuit breaker for permanent magnet mechanism |
| 04/22/2009 | CN101416263A Arc chamber of a high-voltage switch with a heating volume of variable size |
| 04/22/2009 | CN101416262A Electromagnetic operation apparatus for switch |
| 04/22/2009 | CN101414528A Incoming current suppression device |
| 04/22/2009 | CN101414527A Operating apparatus of switch |
| 04/22/2009 | CN101414514A Indoor high-voltage electric grounding switch |
| 04/21/2009 | US7521645 Arc plate, and arc chute assembly and electrical switching apparatus employing the same |
| 04/16/2009 | WO2009049144A2 Compositions containing sulfer hexafluoride and uses thereof |
| 04/16/2009 | US20090095718 Vacuum Cartridge For An Electrical Protection Apparatus Such As A Switch Or A Circuit Breaker |
| 04/16/2009 | US20090095717 A binary, synergistic azeotrope and an additive(s)of stabilizers, metal passivators, corrosion inhibitors, and lubricants; dielectric gas; rigid closed-cell foam insulation; environmentally friendly; chemical resistance; stability; normal boiling points;refrigerants; blowing agents; nonflammable |
| 04/16/2009 | US20090095716 Circuit Breaker |
| 04/15/2009 | EP2048682A1 Modular encapsulated electrical device for power distribution networks |
| 04/15/2009 | EP2048679A1 Circuit breaker assembly |
| 04/15/2009 | CN201222454Y Spring operation mechanism for miniaturisation vacuum circuit-breaker |
| 04/15/2009 | CN201222453Y Mining flame-proof and essential safe type vacuum power-feeding switch |
| 04/15/2009 | CN201222452Y Waist hanging type vacuum circuit-breaker |
| 04/15/2009 | CN201222451Y Minitype vacuum circuit-breaker |
| 04/15/2009 | CN201222450Y Arc-extinguishing current-exchanging switch |
| 04/15/2009 | CN201222427Y Magnetic force deciliter device |
| 04/15/2009 | CN101410923A Electromagnetic actuator for medium voltage circuit breaker |
| 04/15/2009 | CN101410922A Switchgear and method for manufacturing same |
| 04/15/2009 | CN101409178A Intelligent control apparatus and control method for monostabillity permanent magnet mechanism |
| 04/15/2009 | CN101409177A AC high voltage vacuum contactor |