| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 09/15/1999 | CN2338869Y Constant-pressure device for hydraulic mechanism for air-break switch |
| 09/15/1999 | CN1228881A Power switch installation with disconnecting functions |
| 09/14/1999 | US5952636 Vacuum type switch gear device having L shaped stationary and movable conductors arrangement |
| 09/14/1999 | US5952635 Generator circuit breaker |
| 09/14/1999 | CA2076675C Quick-action circuit breaker |
| 09/10/1999 | WO1999045617A1 Metal-enclosed, gas-insulated switchgears with containers filled with gas |
| 09/10/1999 | WO1999045555A1 Apparatus and procedure for elimination of water, air and other gases from the mixture of sulfurhexafluoride (sf6) with gas |
| 09/10/1999 | WO1999045554A1 High voltage circuit breaker with a switch stick made of insulating material |
| 09/09/1999 | DE19809839A1 Metallgekapselte, gasisolierte Schaltanlage mit gasgefüllten Behältern Metal-enclosed, gas-insulated switchgear with gas-filled containers |
| 09/09/1999 | DE19809836C1 Hochspannungsleistungsschalter mit einer Schaltstange aus einem Isolierstoff High-voltage power switch having a switch rod made of an insulating material |
| 09/09/1999 | DE19809305A1 Contact part arrangement for vacuum chamber |
| 09/08/1999 | EP0749628B1 Device for monitoring the operation safety of power switches (diagnosis apparatus) |
| 09/08/1999 | CN2337669Y Outdoor single-electrode high-voltage isolating switch |
| 09/08/1999 | CN2337668Y Permanent-magnetic operating mechanism for vacuum switch |
| 09/08/1999 | CN2337667Y Switching on-off electric magnet |
| 09/08/1999 | CN1227983A Switch apparatus |
| 09/08/1999 | CN1045033C Metal casing type gas insulation combined switch |
| 09/02/1999 | WO1999044213A1 High voltage power circuit breaker with an insulation nozzle |
| 09/02/1999 | CA2321714A1 High voltage power circuit breaker with an insulation nozzle |
| 09/01/1999 | EP0883885B1 Power switch with a spring energy store |
| 09/01/1999 | CN1227663A SF-6 gas-insulated switch installation for electricity distribution supply networks |
| 08/31/1999 | CA2009387C Interrupter switch with selective circuit-isolating feature |
| 08/25/1999 | EP0938115A2 Insulating member for high voltage installation and manufacturing method thereof |
| 08/25/1999 | EP0938114A1 Method and device for synchronous breaking of a power switch |
| 08/25/1999 | CN1226735A Method of closing circuit breaker synchronously |
| 08/19/1999 | WO1999041760A1 Electromagnetic current releasing device for electrical circuit breaker |
| 08/19/1999 | WO1999041759A1 Method and device for operating a circuit breaker |
| 08/19/1999 | DE19806345A1 Verfahren und Vorrichtung zum Betrieb eines Leistungsschalters Method and apparatus for operating a circuit breaker |
| 08/18/1999 | EP0936646A1 Medium or high voltage circuit breaker having an arc chamber with ameliorated dielectric strength |
| 08/18/1999 | CN1226074A Tripping device for circuit breaker equipped with electrical fault indication |
| 08/18/1999 | CN1226073A Gas circuit breaker |
| 08/17/1999 | US5939692 Gas-filled interrupter with compressible thermal expansion chamber |
| 08/17/1999 | CA2196442C High-voltage circuit breaker with resistor activated on closure |
| 08/12/1999 | DE19813177C1 Electric switch, esp. medium voltage switch for power supply networks |
| 08/11/1999 | EP0935272A1 Trip device for a circuit breaker with an electrical fault signalisation |
| 08/11/1999 | EP0934598A1 Vertical antitracking skirts |
| 08/11/1999 | EP0842522B1 Method of monitoring the quality of filler gases, in particular sulphur hexafluoride, in gas-filled installations |
| 08/11/1999 | CN2333083Y 高压开关 High Voltage Switchgear |
| 08/11/1999 | CN2333082Y High voltage vacuum breaker |
| 08/11/1999 | CA2260327A1 Medium or high voltage circuit breaker comprising an interrupter chamber with improved dielectric content |
| 08/04/1999 | EP0933795A2 Gas circuit breaker |
| 08/04/1999 | CN2332057Y Inserted vacuum arc-chutes |
| 08/04/1999 | CN1224910A Electrode arrangement of vacuum circuit breaker with magnetic member for longitudinal magnetization |
| 08/04/1999 | CN1224909A Terminal connection locking apparatus for vacuum circuit breaker |
| 08/04/1999 | CN1224908A Terminal connecting apparatus for vacuum circuit breaker |
| 08/04/1999 | CN1224907A Terminal structure for vacuum circuit breaker |
| 08/04/1999 | CN1224905A High-frequency discharging device for seasoning of vacuum switch |
| 08/04/1999 | CN1224904A Extinguishing chamber for circuit breaker with self-extinguishing expansion and rotating arc |
| 08/04/1999 | CN1224903A Extinguishing chamber of circuit breaker with self-extinguishing expansion, and thermoplastic resin enclosure |
| 08/04/1999 | CN1224902A Electrical spring operation mechanism for opening and closing machine |
| 08/04/1999 | CN1224901A Movable contact part for high voltage circuit breaker with self-extinguishing expansion |
| 08/04/1999 | CN1044530C Arc switching electromechanical switch |
| 08/04/1999 | CN1044529C Contacts material for vacuum valve and method of manufacturing the same |
| 08/03/1999 | US5933308 Arcing fault protection system for a switchgear enclosure |
| 08/03/1999 | US5932858 Stored-energy mechanism for a high-voltage circuit-breaker pole filled with an insulating gas |
| 08/02/1999 | CA2259022A1 Circuit breaker for medium voltage or high voltage comprising a drive belt around two pinions |
| 07/29/1999 | WO1999038181A1 Vacuum interrupter chamber with a ring-shaped isolator |
| 07/28/1999 | EP0932177A1 Arc chamber for an autoexpansion circuit breaker, and internal casing of thermoplastic resin |
| 07/28/1999 | EP0932176A1 Arc chamber for self-blast circuit breaker with a rotating arc |
| 07/28/1999 | EP0932173A1 Mobile contact element for a HT circuit breaker, and expandable |
| 07/28/1999 | EP0932172A2 Contact arrangement for aN ELECTRIC power circuit breaker |
| 07/28/1999 | EP0746862B1 Sequential isolating circuit breaker and actuator |
| 07/28/1999 | CN1224155A Density sensor for monitoring rate of leakage from switchgear case with improved reliability |
| 07/27/1999 | US5929411 Vapor shield for vacuum interrupters |
| 07/27/1999 | US5929410 Terminal structure for vacuum circuit breaker |
| 07/27/1999 | US5929409 Power breaker |
| 07/27/1999 | US5927482 Insulative cover for electrical switching apparatus for electric power distribution systems |
| 07/27/1999 | CA2012365C Arc-extinguishing composition and articles fabricated therefrom |
| 07/22/1999 | DE19802893A1 Low-voltage (LV) vacuum circuit-breaker vacuum interrupter chamber with ring-shaped insulator |
| 07/22/1999 | DE19758357C1 High-voltage (HV) outdoor, compact switchbay arrangement |
| 07/21/1999 | EP0929905A1 Encapsulated vacuum interrupter and method of making same |
| 07/21/1999 | CN2330061Y High-voltage vacuum circuit breaker |
| 07/21/1999 | CN2330060Y Mechanical locking type reversible vacuum contactor |
| 07/21/1999 | CN2330059Y 6-72.5 KV folding miniature isolating switch |
| 07/21/1999 | CN1223741A Electrical circuit breakers |
| 07/21/1999 | CN1223449A Compressed air circuit-breaker with rack gearing device |
| 07/20/1999 | US5925863 Has insulating nozzle which emits gases during disconnection, which gases support production of blowing pressure in arc zone |
| 07/20/1999 | US5924323 To a contact lever of a power switch |
| 07/15/1999 | DE19855413A1 Axial magnetic field contact device for vacuum switch in power engineering |
| 07/15/1999 | DE19828417A1 Arc extinguishing system for contact switching device |
| 07/15/1999 | DE19815153C1 Current transformer for driving over-current trip of low-voltage (LV) circuit-breaker |
| 07/15/1999 | DE19803775C1 Synchronised switching single or multipole vacuum relay |
| 07/14/1999 | EP0929089A1 Method for synchronized closing of a citrcuit breaker |
| 07/14/1999 | CN2329083Y Main valve device for electric locomotive main breaker |
| 07/14/1999 | CN2329082Y Insulation tube for indoor high voltage vacuum breaker |
| 07/13/1999 | CA2025452C Vacuum interrupter with improved vapor shield for gas adsorption |
| 07/12/1999 | CA2256791A1 Circuit breaker synchronous closing process |
| 07/08/1999 | DE19850430A1 Circuit breaker screening section |
| 07/08/1999 | DE19809828C1 Vacuum power circuit breaker |
| 07/07/1999 | CN2328092Y Overload limiter |
| 07/07/1999 | CN2328091Y Outdoor vacuum switch for power distribution system |
| 07/07/1999 | CN2328090Y Outdoor vacuum switch |
| 07/06/1999 | US5920051 Compressed-gas cutout having a disconnecting braking structure |
| 07/01/1999 | WO1999033081A1 Electrical circuit breaker |
| 07/01/1999 | WO1999033078A1 Improvements in and relating to electromagnetic actuators |
| 07/01/1999 | DE19757844A1 Switch arcing detector with non-wound light guide |
| 06/30/1999 | EP0925595A1 Wheeled circuit interrupter provided with a blower-attenuator |
| 06/30/1999 | CN1221199A Multi-position automatic switching actuator for load switch |
| 06/29/1999 | US5917167 Encapsulated vacuum interrupter and method of making same |
| 06/29/1999 | US5916520 Brazing fillers for sealing vacuum-tight vessels, vacuum-tight vessels and method for manufacturing vacuum-tight vessels |