Patents
Sitemap › H01 - Basic electric elements › H01H - Electric switches; Relays; Selectors; Emergency protective devices › H01H 83 - Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
Patents for H01H 83 - Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current (5,042)
02/1990
02/13/1990US4901046 Manually actuated on-off switch with electromagnetic release
02/07/1990EP0353949A2 Modular option deck assembly
02/07/1990CN2052519U 电冰箱保安器 Fridge security device
01/1990
01/31/1990EP0352680A2 Circuit breaker for fault current protection
01/31/1990CN2052149U Phase failure protector in switch
01/31/1990CN2052119U Temp.-display protector for refrigerator
01/25/1990WO1990000807A1 An electromagnetic actuator of the type of a relay
01/25/1990WO1990000805A1 Circuit breaker auxiliary device snap-on package
01/24/1990EP0351674A1 An electromagnetic actuator of the type of a relay
01/16/1990US4894631 Molded case circuit breaker actuator-accessory unit
01/10/1990EP0350441A1 Circuit breaker for a distribution panel and method of operating it
01/10/1990CN2050954U Electronic temp. cortrolling and protecting appliance for refrigerator
01/09/1990US4893101 Resettable ground fault circuit interrupter
01/03/1990EP0349445A1 Protection device against the effects of electromagnetic nuclear pulses
01/03/1990CN1006342B Combined trip unit and accessory module for electronic trip circuit breaker
01/02/1990US4891621 Ambient compensator for thermal overload relay
12/1989
12/26/1989US4890184 Molded case circuit breaker actuator-accessory unit
12/19/1989US4888661 Circuit and apparatus for the protected supply of a load by means of static and electromechanical switches
12/13/1989CN2049406U Ac contactor for open-phase protection
12/13/1989CN1037994A Simple and sensitive automatic lightning arrester
12/12/1989US4887055 Modular option deck assembly
12/06/1989CN2049020U Leakage breaker
12/06/1989CN2049019U Protector for loss of phase
11/1989
11/28/1989US4884048 Molded case circuit breaker current transformer assembly
11/08/1989CN2047448U Domestic electricity leakage protection switch
11/08/1989CN2047447U E shaped iron core direct-acting type mechanical locking contactor
11/08/1989CN2047355U Plug-type freezer protector
11/08/1989CN2047353U 电冰箱保护器 Fridge protection
11/02/1989EP0339131A2 Electric switch with counteracting electro-dynamic forces
11/01/1989CN1036862A Operating mechanism of an auxiliary trip unit for modular circuit breaker
10/1989
10/26/1989DE3912601A1 Turn-off device for turning off at the minimum voltage
10/18/1989CN2046201U Electronic energy-saving protective device of refrigerator
10/11/1989CN2045834U Delayed start under-voltage protector for refrigerator
10/03/1989US4872087 Mechanical assembly means for grand fault interrupter receptacle
09/1989
09/26/1989CA1261958A1 Ground fault receptacle with compact component arrangement
09/26/1989CA1261455A1 Remote control circuit breaker
09/13/1989CN2044337U Automatic refrigerator protector
09/06/1989EP0331586A1 Actuating mechanism of an auxiliary tripping block for a modular circuit breaker
09/06/1989CN1035389A Protected electric switching apparatus and device for fixing same
09/05/1989US4864262 Undervoltage trip device
08/1989
08/23/1989EP0195816B1 Bimetallic trigger
08/22/1989US4860157 Molded case circuit breaker actuator-accessory module
08/22/1989US4859979 Thermal relay
08/15/1989US4858056 Molded case circuit breaker actuator-accessory module
08/09/1989EP0326772A1 Releasing relay with spitting remote sensing-element
08/09/1989CN2042583U Refrigerator automatic protector with specially designed return difference voltage function
08/08/1989US4855862 Recloser undervoltage lockout mechanism
07/1989
07/26/1989EP0325501A1 Automatic switches, in particular differential switches and circuit breakers
07/26/1989EP0325071A1 Protection device for electrical installations
07/18/1989US4849590 Electric switch with counteracting electro-electro-dynamic forces
07/04/1989US4845455 Thermally-sensible overcurrent protective relay including heater holder
06/1989
06/21/1989EP0321086A2 Overload relay having adaptive differential mechanism
06/21/1989EP0320931A2 Units for detecting differential currents in electric systems
06/21/1989EP0320929A2 Device for releasing the contacts of differential switches
06/21/1989EP0320928A2 Device for detecting differential currents in electric systems
06/20/1989US4841106 Symmetric percussion switching device using a head point over-run device
06/14/1989EP0320411A1 Ground fault circuit interrupter
06/14/1989EP0320409A1 Static release with external supply
06/14/1989CN2039464U Protector for communication equipment
05/1989
05/31/1989CN2038664U Automatic electric breaking switch
05/23/1989US4833563 Molded case circuit breaker actuator-accessory module
05/16/1989US4831496 Ground fault receptacle circuitry components
05/16/1989US4831221 Molded case circuit breaker auxiliary switch unit
05/03/1989CN2037108U 电磁继电器 Electromagnetic relays
05/02/1989CA1253548A1 Low voltage multipole circuit-breaker operating mechanism
04/1989
04/27/1989DE3734183A1 Electrical motor protection circuit breaker having an associated zero-voltage circuit breaker which trips in the event of undervoltage
04/26/1989CN1032604A Magnetic trip device with knife-blade articulation
04/25/1989US4825096 Remote control apparatus for tripping off switches
04/19/1989CN2036313U Electricity leakage protecting switch
04/12/1989EP0310943A2 Electric switch gear
04/12/1989EP0310798A2 Shock harzard protection system
04/06/1989DE3732469A1 Method for adjusting a bimetallic trip device
04/04/1989CA1252176A1 Circuit breaker low oil trip and/or lockout apparatus
03/1989
03/21/1989US4814737 Overload relay
03/08/1989EP0306383A1 Magnetic tripper with knife articulation
02/1989
02/28/1989US4808961 Thermally-sensible overcurrent protective relay including contact toggle mechanism
02/21/1989US4806897 Overload relay having adaptive differential mechanism
02/21/1989US4806893 Molded case circuit breaker actuator-accessory unit
02/14/1989US4804862 Electro mechanical switch having remotely controlled off position
01/1989
01/31/1989US4802052 Latching and release system for ground fault receptacle
01/31/1989US4801907 Undervoltage release accessory for a circuit breaker interior
01/17/1989CA1249002A1 Ground fault module for ground fault circuit breaker
01/10/1989US4797649 Circuit breaker actuated by shape memory alloy
01/04/1989EP0298018A1 Excess current releasing device with accelerated release
12/1988
12/28/1988EP0296183A1 Circuit breaker contact assembly.
12/28/1988CA1247729A Multipole breaking device with remote control
12/27/1988US4794356 Molded case circuit breaker auxiliary switch unit
12/14/1988EP0295236A2 Hand operated on-off switch with electromagnetic release
12/14/1988EP0295167A1 Test unit for electrical differential protection apparatus and apparatus incorporating this unit
12/14/1988EP0295155A1 Modular breaker with an auxiliary tripping block associated with a multipole breaker block
11/1988
11/30/1988CN88102711A Modular breaker of auxiliary interruper unit and many stage breaker connected
11/29/1988US4788621 Molded case circuit breaker multiple accessory unit
11/29/1988US4788518 Thermally-sensitive overcurrent protective relay including wire connection terminal
11/22/1988US4786885 Molded case circuit breaker shunt trip unit
11/22/1988CA1245257A1 Reset mechanism for a rotary switch
11/17/1988EP0291374A1 Trip bar for a multipole breaker block associated with an auxiliary trip block
11/15/1988US4785274 Thermally-sensible overcurrent protective relay including automatic resetting mechanism
11/01/1988CA1244072A1 Electrical switch means particularly adapted to gfci test and reset switches
10/1988
10/13/1988DE3710530A1 Method for adjusting bimetallic strips
08/1988
08/31/1988CN88210786U Protector for electric warming mattress
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