| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 03/30/1999 | US5889248 Operating mechanism for combined interrupter disconnect switch |
| 03/25/1999 | WO1999014772A1 Transformer system provided with a decoupling system |
| 03/25/1999 | WO1999014769A1 Electromagnetic actuator |
| 03/25/1999 | DE19756308C1 Vacuum switch esp. for high-voltage |
| 03/25/1999 | CA2245161A1 Control for electrical device, for example a high-voltage circuit breaker |
| 03/24/1999 | EP0830700B1 Insulating component for high-voltage equipment |
| 03/24/1999 | CN2311849Y A/C high voltage vacuum breaker |
| 03/24/1999 | CN2311848Y Stationary contact and flexible connecting mechanism for high voltage vacuum switch |
| 03/23/1999 | US5886605 Actuator assembly with calibration means and electrical power switch apparatus incorporating the actuator assembly with calibration means |
| 03/18/1999 | DE19741660A1 HV circuit breaker with field electrode |
| 03/18/1999 | DE19740664A1 Transformer arrangement with isolating device |
| 03/17/1999 | CN2311071Y 35 KV outdoor high-voltage vacuum breaker |
| 03/17/1999 | CN1211335A Interlock arrangement for stationary mounted circuit breakers |
| 03/11/1999 | WO1999012177A1 Electric high voltage switch |
| 03/11/1999 | WO1999012176A2 High voltage circuit-breaker with a counter-contact which can be actuated |
| 03/11/1999 | WO1999012175A1 Power circuit breaker with an actuating shaft |
| 03/10/1999 | CN1210353A Circuit interrupter with plasma arc acceleration chamber and contact arm housing |
| 03/10/1999 | CN1042469C Switch |
| 03/04/1999 | DE19738195A1 Disc shaped vacuum contact element for vacuum chamber |
| 03/03/1999 | EP0899764A2 Insulating structure |
| 03/03/1999 | EP0898780A1 Magnetically driven electric switch |
| 03/03/1999 | EP0829894B1 Hydraulic drive |
| 03/03/1999 | EP0829893B1 Hydraulic drive |
| 03/03/1999 | CN2309616Y High-tension vacuum contactor |
| 03/03/1999 | CN2309615Y Insulating bush of vacuum circuit breaker |
| 03/03/1999 | CN1209686A Electric control device |
| 03/02/1999 | US5877466 Vacuum electrical switch or circuit breaker |
| 03/02/1999 | US5877465 High-tension circuit-breaker with damper |
| 02/24/1999 | EP0898292A2 Electric control apparatus |
| 02/24/1999 | EP0897587A1 Modular accessory mechanical lockout mechanism |
| 02/24/1999 | EP0847587B1 Power circuit-breaker with current transformers and data store |
| 02/24/1999 | CN2308955Y Directly plugging vacuum loaded switch |
| 02/23/1999 | US5874873 Electric control apparatus |
| 02/17/1999 | EP0897185A1 Gas-blast circuit breaker with reduced compression |
| 02/11/1999 | DE19735924A1 HV switch or circuit breaker drive |
| 02/10/1999 | EP0896350A2 High-voltage power circuit breaker with two arcing contacts moving in opposite directions |
| 02/10/1999 | EP0895643A1 Interrupter unit of a high-voltage power circuit breaker |
| 02/10/1999 | EP0843882B1 Power switch equipped with a locking device |
| 02/03/1999 | EP0895262A1 Gas circuit breaker with compressible volume and thermal expansion |
| 02/03/1999 | CN2306562Y One-way clutch for storaging energy of operating mechanism of high-voltage electric appliance |
| 02/03/1999 | CN1206926A Terminal conductor for vacuum switch |
| 02/03/1999 | CN1206925A Pecker |
| 02/03/1999 | CN1206924A 断路器 Breaker |
| 02/03/1999 | CN1041982C High-voltage installation |
| 02/02/1999 | US5866864 Electric current switching apparatus with arc spinning extinguisher |
| 02/02/1999 | US5864942 Method of making high voltage switches |
| 01/28/1999 | WO1999004472A1 Recloser-automatic switch for aerial power lines of the tel series |
| 01/28/1999 | CA2296429A1 Recloser-automatic switch for aerial power lines of the tel series |
| 01/27/1999 | EP0893864A1 Drawer type circuit breaker |
| 01/27/1999 | EP0893811A2 A vacuum switch and a vacuum switchgear using the same |
| 01/27/1999 | CN2305747Y Outdoor vacuum break switch for 35KV and 63KV |
| 01/27/1999 | CN1206215A Vacuum switch and vacuum switch apparatus using the same |
| 01/27/1999 | CN1206214A Contact mechanism of switch device |
| 01/26/1999 | US5864109 Terminal connection locking apparatus for vacuum circuit breaker |
| 01/26/1999 | US5864108 Vacuum switch assembly including housing insulating support |
| 01/26/1999 | US5864107 Switchgear assembly |
| 01/21/1999 | WO1999003180A1 A link switch |
| 01/20/1999 | EP0892415A2 Electric current switching apparatus with arc spinning extinguisher |
| 01/20/1999 | EP0827168B1 Power circuit-breaker |
| 01/20/1999 | CN1205534A Vacuum breaker |
| 01/20/1999 | CN1205533A Accumulating mechanism of switching gear |
| 01/20/1999 | CN1205530A Electric current switching apparatus with arc spinning extinguisher |
| 01/20/1999 | CN1205529A Connector of terminal |
| 01/19/1999 | US5861597 Designed to break an electrical circuit |
| 01/13/1999 | EP0829892B1 Hydraulic drive |
| 01/13/1999 | CN2304179Y Frame structure of circuit breaker |
| 01/13/1999 | CN1041664C Gas-insulated disconnector provided with structure for suppressing metal particles contamination |
| 01/12/1999 | US5859578 Current limiting shunt for current limiting circuit breakers |
| 01/12/1999 | US5859399 Circuit breaker having semi-moving piston |
| 01/12/1999 | US5859398 Sequential isolating circuit breaker and actuator |
| 01/12/1999 | CA2111960C Automatic miniature circuit breaker with z-axis assemblable current response mechanism |
| 01/07/1999 | WO1999000814A1 High voltage circuit breaker with two arcing contacts which can be actuated in an opposite direction |
| 01/07/1999 | WO1999000809A2 Low-voltage power switch with an actuating shaft |
| 01/07/1999 | EP0889498A2 Rotary contact assembly for high ampere-rated circuit breakers |
| 01/07/1999 | EP0721650B1 Bistable magnetic actuator |
| 01/06/1999 | CN2303373Y Vacuum switch tube |
| 01/06/1999 | CN2303372Y Rolling connection arrangement for vacuum breaker |
| 01/06/1999 | CN1204417A Open-air high-voltage circuit breaker |
| 01/06/1999 | CN1204135A Vacuum type switch gear device having L shaped stationary and movable conductors arrangement |
| 01/06/1999 | CN1204134A Moisture absorption device for electrical apparatus containing dielectric gas |
| 01/05/1999 | CA2133059C Operating mechanism for circuit breaker |
| 12/30/1998 | WO1998059353A1 A control device and a method for controlling an electromagnetic actuator for electric circuit breakers |
| 12/30/1998 | EP0887832A2 Circuit interrupter with plasma arc acceleration chamber and contact arm housing |
| 12/30/1998 | EP0887824A1 Vacuum type switch gear device having L shaped stationary and movable conductor arrangement |
| 12/30/1998 | EP0887823A1 Moisture absorbind device for electrical apparatus using a dielectric gas |
| 12/29/1998 | US5854729 Power system device and method for actively interrupting fault current before reaching peak magnitude |
| 12/29/1998 | CA2136924C Group operated circuit disconnect apparatus for overhead electric power lines |
| 12/29/1998 | CA2117836C High voltage circuit breaker for interrupting fault current by delayed zero crossing |
| 12/26/1998 | CA2241257A1 Moisture absorbing device for dielectric gas electrical apparatus |
| 12/23/1998 | EP0885841A1 System and method for collecting and refining SF6 gas |
| 12/23/1998 | CN2301787Y High-voltage vacuum circuit breaker combined electric appliance |
| 12/23/1998 | CN1202717A Current-limiting apparatus |
| 12/23/1998 | CN1202716A Braker with closed resistance |
| 12/22/1998 | US5852266 Vacuum circuit breaker as well as vacuum valve and electric contact used in same |
| 12/16/1998 | EP0884745A1 Circuit breaker with closing resistor |
| 12/16/1998 | EP0883887A1 Zero current circuit interruption |
| 12/16/1998 | EP0883885A1 Power switch with a spring energy store |
| 12/16/1998 | CN1202268A Electrical switch |
| 12/15/1998 | US5850125 Pseudospark switch having an insulator between electrodes |
| 12/15/1998 | US5850065 Gas circuit breaker |