Patents
Sitemap › H01 - Basic electric elements › H01H - Electric switches; Relays; Selectors; Emergency protective devices › H01H 77 - Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting
Patents for H01H 77 - Protective overload circuit-breaking switches operated by excess current and requiring separate action for resetting (1,434)
11/1991
11/06/1991CN1014662B Circuit breaker with generating electro-magnetic force connection branch
10/1991
10/15/1991US5057806 Crossbar assembly
09/1991
09/24/1991US5051859 Current-limiting load cutout
08/1991
08/24/1991WO1991013452A1 Quick-action circuit breaker
07/1991
07/09/1991US5030804 Contact arrangement for electric switching devices
07/03/1991CN2080231U Protective relay
07/02/1991US5029301 Limiting circuit breaker equipped with an electromagnetic effect contact fall delay device
06/1991
06/26/1991CN2079801U 水银保险丝 Mercury fuse
06/25/1991US5027096 Key blocks for circuit breaker
06/11/1991US5023583 Circuit breaker contact operating structure
06/11/1991US5023416 Circuit breaker
05/1991
05/22/1991EP0428475A2 Low tension switch with pivoted contact member
05/22/1991EP0427826A1 Automatic cutout.
04/1991
04/24/1991CN1050945A Ct quick change assembly and force transitting spacer
04/18/1991WO1991005391A1 Control and protection devices by means of the quantified energetic pulse technique
04/17/1991EP0422868A2 CT quick change assembly and force transmitting spacer
04/11/1991DE4000206A1 Circuit breaker e.g. three-pole disconnecting switch - has movable contact slidably electrically connected to fixed contact
04/02/1991US5004878 Molded case circuit breaker movable contact arm arrangement
04/02/1991CA1282445C Molded case circuit breaker with a movable electrical contact positionedby a camming leaf spring
03/1991
03/27/1991EP0418755A2 Current limiting circuit breaker
03/27/1991EP0418754A2 Current limiting apparatus
03/26/1991CA1282101C Circuit interrupter with integral stop means for contact arm
03/05/1991US4998081 Power interrupter with force-sensitive contact latch
02/1991
02/26/1991US4996507 Circuit breaker
01/1991
01/30/1991EP0410258A2 Electromechanic high-speed breaker
01/30/1991EP0410257A1 Electromechanical high speed switch
01/10/1991WO1991000610A1 Contact arrangement for electric switching devices
01/10/1991WO1991000609A1 Circuit breaker
01/10/1991DE3920546A1 High-power contact esp. for low-voltage switchgear - has armature on contact lever for rapid contact sepn. triggered by flow of short-circuit current
01/08/1991US4982571 Automatic hydraulic activation mechanism
01/02/1991EP0406130A1 Limiting circuit-breaker provided with electromagnetic means for delaying the return movement of the contact
01/02/1991CN1011099B Molded case circuit breaker with movable electrical contact positioned
12/1990
12/27/1990EP0404172A2 Heavy-duty contact, particularly for low tension switch gear
12/26/1990CA2019492A1 Limiting circuit breaker equipped with an electromagnetic effect contact fall delay device
11/1990
11/22/1990EP0398461A2 Circuit breaker with an actuating and a locking device for a moving contact
11/15/1990WO1990013903A1 Automatic cutout
10/1990
10/31/1990EP0394922A1 Contact arrangement for electric switching devices
10/28/1990CA2008846A1 Compact current limiting circuit breaker
10/16/1990US4963849 Compact current limiting circuit breaker
10/03/1990CN1009877B Molded case circuit breaker
09/1990
09/30/1990CA2008957A1 Molded case circuit breaker movable contact arm arrangement
09/23/1990CA2008076A1 Molded case circuit breaker movable contact arm arrangement
08/1990
08/21/1990US4950853 Tapered stationary contact-line copper cross reference to related applications
08/16/1990DE3904214A1 Method for limiting a short-circuit current flowing through a high-voltage mains power supply
08/01/1990EP0380012A1 Contact system for a current limiting circuit breaker
07/1990
07/31/1990US4945325 Circuit breaker with smooth sliding operation
07/24/1990US4943691 Low-voltage limiting circuit breaker with leaktight extinguishing chamber
07/10/1990US4940957 Flange engagement of captive tube in electromagnetic circuit breakers using half shells
06/1990
06/27/1990EP0375087A1 Contact arrangement with a conductive pivot for a contact lever
06/19/1990US4935711 Electromagnetic switch
06/05/1990US4931603 Molded case circuit breaker movable contact arm arrangement
04/1990
04/24/1990US4920448 Semiconductor-assisted ultra-fast contact breaker
04/18/1990EP0363746A1 Overcurrent protection device for electrical networks and apparatuses
04/10/1990US4916421 Contact arrangement for a current limiting circuit breaker
03/1990
03/06/1990US4906967 Electronic circuit breaker with withstand capability
02/1990
02/28/1990CN1040112A Crossbar assembly
02/07/1990EP0353940A2 Crossbar assembly
02/06/1990US4899119 Circuit breaking apparatus with remote controlled opening and closing of its circuits
01/1990
01/03/1990EP0349445A1 Protection device against the effects of electromagnetic nuclear pulses
12/1989
12/13/1989EP0346249A1 Low-voltage current-limiting circuit breaker with a sealed arc chamber
12/13/1989CN2049405U Overload protector
12/12/1989US4887057 Cam roll pin assembly
10/1989
10/04/1989EP0335824A1 Current limiting switching device with electro-dynamically openable contact pieces
10/04/1989EP0335823A1 Combination of switching apparatuses comprising a low-tension power circuit breaker and a current-limiting switching device
10/03/1989CA1262162A1 Circuit breaker with visible trip indicator
09/1989
09/26/1989CA1261455A1 Remote control circuit breaker
09/05/1989US4864261 Contactor device fo circuit breaker
08/1989
08/10/1989WO1989007327A1 Electric switching device
08/10/1989DE3803849C1 High-power switching path for protective switching devices
08/08/1989US4855549 Circuit breaker
08/01/1989US4853662 Contactor apparatus
07/1989
07/18/1989US4849726 Circuit breaker
07/05/1989EP0322987A1 Electromagnetic switch
07/04/1989US4845459 Contact arrangement of a low-voltage circuit breaker with electro-dynamic breaking
06/1989
06/20/1989US4841266 Circuit breaker having an electrodynamically opening contact system
05/1989
05/30/1989US4835501 Current limiting assembly for circuit breakers
05/30/1989CA1254933A1 Circuit breaker contact structure
05/24/1989EP0316944A2 Circuit breaker with smooth sliding operation
05/02/1989CA1253549A1 Molded case circuit breaker with an apertured molded cross bar for supporting a movable electrical contact arm
04/1989
04/26/1989EP0313062A1 Contact system for a power circuit breaker
04/18/1989CA1252814A1 Circuit breaker with force generating shunt
04/11/1989US4821009 Overcurrent-protective snap switch for household appliances
04/11/1989CA1252497A1 Movable contact arm assembly for a current limiting circuit breaker
04/05/1989EP0309923A2 Improved contact arrangement for a current limiting circuit breaker adapted to be actuated both manually and by an actuating electromagnet
04/05/1989CN1003824B Magnetically operated circuit breaker
04/04/1989CA1252139A1 Molded case circuit breaker with a movable electrical contact positioned by a camming spring loaded clip
04/04/1989CA1252137A1 Circuit breaker with arm latch for high interrupting capacity
03/1989
03/29/1989EP0309382A1 Contact arrangement for a low-voltage circuit breaker with an electrodynamic opening
03/28/1989US4816792 Circuit breaker apparatus with remote controlled opening and closing of its circuits
03/21/1989CA1251497A1 Circuit breaker with blow open latch
03/21/1989CA1251496A1 Circuit breaker contact arm with variable force pivot
02/1989
02/22/1989EP0303698A1 Current-limiting circuit breaker
02/14/1989CA1250007A1 Breaker apparatus with opening and closing through tele-control from associated circuits
01/1989
01/31/1989US4801913 Flat bi-metallic strip circuit breaker
01/31/1989US4801772 Current limiting circuit interrupter with insulating wedge
01/31/1989CA1249622A1 Breaker apparatus with opening and closing through tele-control from associated circuits
12/1988
12/27/1988US4794357 Multi-pole circuit interrupter
12/13/1988US4791393 Molded case circuit breaker with movable upper electrical contact positioned by torsion springs
11/1988
11/30/1988CN88102711A Modular breaker of auxiliary interruper unit and many stage breaker connected
11/22/1988CA1245255A1 Magnetically operated circuit breaker
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