| Patents for H01H 33 - High-tension or heavy-current switches with arc-extinguishing or arc-preventing means (18,584) |
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| 04/14/1993 | EP0537074A1 Circuit breaker with composite sleeve provided with a monitoring device |
| 04/14/1993 | EP0536856A1 Metal encapsulated, pressurised gas-insulated high-tension switchgear |
| 04/13/1993 | US5201207 Method of manufacturing a thimble of contact fingers, and a thimble made by the method |
| 04/08/1993 | DE4205501C1 High tension switch preventing arcing when switched off - has two slidable contacts surrounded by insulating nozzle during on state, and control electrode surrounding nozzle. |
| 04/08/1993 | DE4133091A1 Vakuumschalter mit einer antriebsvorrichtung und einer polantriebseinheit Vacuum switch with a drive device and a pole drive unit |
| 04/08/1993 | DE4133078A1 Power electrical switch with arc extinguishing action - provided by generating high velocity arc extinguishing gas flow through gap formed in contact region |
| 04/07/1993 | EP0536039A1 Ultra-high voltage circuit breaker |
| 04/07/1993 | CN2129461Y Vacuum switch with isolated break |
| 04/07/1993 | CN2129460Y Link mechanism of automatic air switch interlock device |
| 04/06/1993 | US5200737 System and method for detecting partial discharge of gas-insulated switchgear |
| 04/01/1993 | DE4133092A1 Mehrpoliger vakuumschalter mit einer polantriebseinheit fuer jede vakuumschaltroehre Multi-pole vacuum switch with a pole drive unit for each vakuumschaltroehre |
| 03/31/1993 | CN1070512A Apparatus for interrupting current without natural zero-crossing |
| 03/30/1993 | US5198630 Resistance insertion type circuit-breaker |
| 03/30/1993 | US5197604 High-voltage change-over switch with linear movement |
| 03/25/1993 | DE4131827A1 Vacuum switch with spring coupled actuator - that has leaf spring located between drive stage and actuator rod of movable contact |
| 03/24/1993 | EP0532513A1 Contact assembly for a vacuum switch tube. |
| 03/24/1993 | CN1070284A Drive apparatus with pressure medium for open and close switch contact |
| 03/23/1993 | CA1314919C Rotating arc and expansion circuit breaker |
| 03/23/1993 | CA1314918C Rotary switch with curved arc root migration track |
| 03/21/1993 | CA2078105A1 Arc interrupter apparatus having contact bounce suppressor |
| 03/18/1993 | WO1993005522A1 Ceramic insulating body |
| 03/17/1993 | EP0532394A1 Circuit breaker device without natural zero crossing for the current |
| 03/16/1993 | CA1314579C Multiphase gas expansion circuit breaker for a gas-insulated metalclad cell |
| 03/12/1993 | CA2077928A1 Disconnecting device with no zero-current transition |
| 03/11/1993 | DE4227838A1 Electrically insulated drive rod for HV switch - has cross holes formed at both ends such that constant dia. section matching that of bolt is one third of length of hole |
| 03/11/1993 | DE4130230A1 Vacuum switch contact system for high voltage network - has built in electromagnetic field generator coated around contact region with arc aperture in housing |
| 03/11/1993 | DE4129788A1 Control circuit for synchronised switching of 3 pole high power switch - has auxiliary switches with three pairs of contacts interconnected for operation of main isolator switches |
| 03/10/1993 | EP0530544A1 Fluid pressure operating means, for opening and closing the contacts of a circuit breaker |
| 03/10/1993 | EP0530437A1 Contact material for vacuum circuit breakers and method of manufacturing the same |
| 03/03/1993 | CN1020020C Three-phase common container breaker |
| 03/03/1993 | CN1020019C Arc spinner interrupter |
| 03/03/1993 | CN1020001C Action monitor of switchgears |
| 03/02/1993 | US5191516 Switch support |
| 03/02/1993 | US5191180 Gas-insulated switchgear including a vacuum switch, operating mechanism and plural bellows |
| 02/25/1993 | DE4127901A1 High voltage power switch - has pair of hollow section fixed contacts with bridging contact and carbon@ fibre reinforced contact for high resistance to arcing |
| 02/24/1993 | CN1069363A Medium-or high-tension circuit breaker having abutting arcing contacts |
| 02/24/1993 | CN1069362A Method of manufacturing thimble of contact fingers, and thimble made by this method |
| 02/23/1993 | US5189270 Contact structure for vacuum circuit breaker |
| 02/17/1993 | CN1069142A Contact material for vacuum circuit breakers and method of manufacturing same |
| 02/16/1993 | US5187339 Gas insulated high-voltage circuit breaker with pneumatic operating mechanism |
| 02/16/1993 | US5186315 High voltage disconnecting switch |
| 02/10/1993 | CN1068911A High- and medium-voltage gas circuit breaker |
| 02/10/1993 | CN1068909A Contact for circuit-breaker |
| 02/09/1993 | US5185590 Magnetic blow-out circuit breaker with booster loop/arc runner |
| 02/04/1993 | WO1993002463A1 Pole for a power switch |
| 02/04/1993 | WO1993002461A1 Modular closing resistor |
| 02/03/1993 | EP0526296A1 Gas blast circuit brealer for high and middle tension |
| 02/03/1993 | EP0525834A2 Pressure vessel for a switch |
| 02/03/1993 | EP0525716A1 MT or HT circuitbreaker with abutting arcing contacts |
| 02/03/1993 | EP0525635A1 Vacuumtube with electrical insulation |
| 02/03/1993 | EP0525354A1 Vacuum switch tube |
| 02/03/1993 | EP0296183B1 Circuit breaker contact assembly |
| 02/03/1993 | CN1068597A Process for manufacturing countact material for vacuum circuit breakers |
| 01/27/1993 | EP0524472A1 Method for manufacturing a switch pole, device for carrying out this method, and switch pole for a medium or high voltage switch |
| 01/21/1993 | WO1993001604A1 Isolating switch with a main switch pin and an auxiliary contact pin |
| 01/21/1993 | CA2113097A1 Isolating switch with a main switch pin and an auxiliary contact pin |
| 01/20/1993 | EP0524088A1 Contact for circuit breaker |
| 01/20/1993 | CA2074037A1 Contact for a circuit breaker |
| 01/12/1993 | US5179495 Solid state overload relay |
| 01/12/1993 | US5179257 Medium-voltage gas circuit-breaker |
| 01/07/1993 | EP0521585A1 An improved drive mechanism for an electric switch, in particular a circuit breaker or power switch |
| 01/07/1993 | EP0521274A1 Process for manufacturing a contact material for vacuum circuit breakers |
| 01/07/1993 | DE4121685A1 Vacuum switch chamber - has axial magnetic field formed by pot-shaped contacts with contact material formed as ring discs on ring surface of contact body |
| 01/06/1993 | CN1067741A Apparatus for measuring displacement increment of translational mobile piece, particular breaker command bar |
| 12/30/1992 | EP0520593A1 Multipole electrical switchgear |
| 12/30/1992 | EP0520221A1 Electronically switched power receptacle |
| 12/30/1992 | CN1019713B Gas breaker |
| 12/29/1992 | US5175403 Recloser means for reclosing interrupted high voltage electric circuit means |
| 12/23/1992 | EP0519377A1 Vacuum switch tube |
| 12/23/1992 | EP0519343A1 Electric switching device |
| 12/22/1992 | US5173833 For breaking a connection in an AC power line |
| 12/17/1992 | DE4119840A1 Low space requirement piston sealing system for high voltage switch - has adjacent, radially slit sealing rings of rectangular cross=section which are joined loosely by pin |
| 12/17/1992 | DE4119191A1 Electrical contact for vacuum switch - features disc shaped contact pieces with spiral slots and encircling contact ring with radiused edge |
| 12/16/1992 | EP0518837A1 An arrangement in an SF6 insulated, high voltage on-load switch |
| 12/16/1992 | EP0518786A1 Electrical vacuum switch |
| 12/11/1992 | CA2069688A1 Vacuum electrical switch |
| 12/09/1992 | EP0517620A1 M.T. circuit breaker with reduced control energy |
| 12/09/1992 | EP0517295A2 Medium voltage switch with three positions insulated in sulphur hexafluoride |
| 12/09/1992 | EP0516640A1 Quick-action circuit breaker. |
| 12/09/1992 | CN1066933A Circuit breaker with parallel resistor |
| 12/09/1992 | CN1019431B Medium-voltage electric switch with sealed case |
| 12/09/1992 | CN1019430B Contact forming material for vacuum interrupter |
| 12/08/1992 | US5170023 Circuit breaker with varistor-assisted interruption |
| 12/04/1992 | CA2069690A1 Medium voltage circuit breaker with reduced operating energy |
| 12/03/1992 | DE4129572C1 Insulating compsn. for a nozzle in high tension switch - consisting of thermoplastic polymer e.g. polyether:imide and conductive polymer e.g. poly:pyrrole salt |
| 12/03/1992 | DE4117310A1 Breaker switch for overhead line - has spring coupling switch blade for each pole to operating isolator |
| 12/02/1992 | EP0516533A1 Manufacturing process of a socket-contact and socket-contact so obtained |
| 12/01/1992 | US5168139 Load-break switch having a vacuum interrupter and method of operation |
| 11/26/1992 | WO1992021168A1 Device for contacting one end of a shaft |
| 11/25/1992 | EP0515268A1 Varistor insertion device incorporated in an H.T. circuit breaker |
| 11/25/1992 | EP0515267A1 Gas-blast load-break middle and high voltage switch |
| 11/25/1992 | EP0515009A1 Multi-position rotary switch with extinguishing gas |
| 11/25/1992 | EP0514872A1 Circuit breaker with parallel resistor |
| 11/25/1992 | CN2123117U Mechanical tester of high-voltage breaker |
| 11/25/1992 | CN1066534A Gas isolated disconnecting switch and gas isolated switching device |
| 11/24/1992 | US5166483 Electrical circuit breaker with rotating arc and self-extinguishing expansion |
| 11/19/1992 | EP0513945A1 Switch-chamber for a metal-clad air blast switch |
| 11/17/1992 | US5164695 Interlocked contactor assembly |
| 11/17/1992 | US5164559 Circuit breaker with an incorporated varistor |
| 11/11/1992 | EP0512366A2 Gas isolated disconnection switch and gas isolated switching device |