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)
12/1991
12/17/1991US5073724 Programmable inverse time delay circuit
12/11/1991EP0461027A1 Differential release device
12/03/1991CA1292762C Thermal relay
11/1991
11/27/1991EP0458190A1 Under-voltage release device
11/27/1991EP0378679A4 Circuit breaker auxiliary device snap-on package
11/20/1991CN1056372A Checkout device for fault current protective switch
11/13/1991EP0456586A1 Test circuit for a differential tripping device
11/13/1991EP0456585A1 Single-pole, neutral differential circuit breaker
11/13/1991EP0456583A1 Homopolar transformer for differential switches or circuit breakers, and mounting method
11/13/1991EP0456238A1 Device for multiphase current monitoring
11/13/1991CN1056185A Fault current protective switch in modular design
10/1991
10/23/1991CN2087384U Protecting equipment for guarding against leakage of electricity and geting electric shock
10/16/1991EP0452175A1 Electronic protective relay for polyphase load
10/16/1991EP0451481A2 Test device for earth fault circuit breaker
10/16/1991EP0451480A1 Fault-current protective switch in module construction
10/09/1991CN1014283B Circuite breaker with adjustable thermal trip unit
10/08/1991US5054754 Inversion spring for thermal overload relay and method for making the same
10/01/1991US5053736 Molded split case electromagnetic circuit breaker assembly
09/1991
09/18/1991CN1054686A Contact relay open-phase protector
09/11/1991CN2084674U Phase-lost protective socket for three phase motor
09/10/1991US5046227 Method for making an inversion spring for thermal overload relay
09/03/1991CA1288459C Recloser undervoltage lockout mechanism
08/1991
08/27/1991US5043688 Actuator-accessory interface unit for molded case circuit interrupter
08/24/1991WO1991013454A1 A circuit breaker
08/24/1991CA2053238A1 Circuit breaker
08/14/1991DE4003744A1 Rotary switch with automatic cut=out upon voltage loss - has spring loaded return lever holding armature in self-holding position
08/14/1991DE4003743A1 Overcurrent protection device - incorporates setting for different currents bimetallic deformations
08/13/1991CA2036032A1 Electrical circuit breaker protection device
07/1991
07/25/1991DE4100772A1 Undervoltage trigger for switch latch - has shape memory element coupled to release lever and tensioning force storer
07/17/1991EP0437220A2 Circuit breaker with leakage current detecting functions
07/17/1991CN2081149U Hand-push electromagnetic controller of multifunction energy-saving type for electric appliances
06/1991
06/25/1991US5027093 Molded case circuit breaker actuator-accessory unit having component tolerance compensation
06/25/1991US5027092 Tripping arrangement for molded case circuit interrupter
05/1991
05/16/1991DE3937546A1 Mobile protection device for electrical load - has manual button acting simultaneously on armature and pivoted contact carrier
05/08/1991CN2076709U Mechanical lock catch contactor of iron core direct acting type
05/07/1991US5014025 Actuator-accessory reset arrangement for molded case circuit interrupter or electric switch
04/1991
04/24/1991EP0423245A1 An electromagnetic actuator of the type of a relay
04/17/1991CN1050789A Circuit breaker with moving magnetic core for low current magnetic trip
04/10/1991EP0421691A2 Circuit breaker with moving magnetic core for low current magnetic trip
03/1991
03/30/1991WO1991005358A1 Energy management accessory for circuit breaker
03/21/1991DE3927610C1 Circuit breaker with electronic monitoring circuit - has rocker switch with three positions, on, off and latch-in
03/20/1991CN2073618U Protective switch for the use of leakage and short of single phase
03/19/1991US5001315 Circuit breaker auxiliary device snap-on package and method of assembling same
03/19/1991CA1281787C Latching and release system for ground fault receptacle
01/1991
01/01/1991US4982174 Molded split case electromagnetic circuit breaker assembly
12/1990
12/19/1990EP0403329A1 Circuit breaker with automatic tripping, particularly protective switch and fault-current protective switch
12/19/1990EP0403216A2 Electromagnetic actuator arrangement
12/14/1990CA2018965A1 Electromagnetic actuator arrangement
12/05/1990CN2067029U Single gang switch for electricity cut-off protection
11/1990
11/28/1990EP0399283A2 An actuator device for emergency controls
11/27/1990US4973927 Two piece cradle latch, handle barrier locking insert and cover interlock for circuit breaker
11/07/1990CN2065362U Open-phase protection fuse
11/07/1990CN1046811A Two piece cradle latch, handle barrier locking insert and cover interlock for circuit breaker
10/1990
10/31/1990EP0395326A1 Two piece cradle latch, handle barrier locking insert and cover interlock for circuit breaker
10/25/1990CA2013535A1 Two piece cradle latch, handle barrier locking insert and cover interlock for circuit breaker
10/17/1990EP0392204A2 Use of a microcrystalline iron-based alloy as a magnetic material for a fault current-protective switch
10/10/1990CN2063688U Self-lock contactor
10/04/1990DE3921511C1 Thermal overcurrent relay protecting AC appts. - has slide operated by bimetal unit heated by working current
10/02/1990CA1274872A1 Circuit breaker with self-contained electronic trip actuator
09/1990
09/26/1990EP0389075A1 Power circuit breaker with an undervoltage tripping device
09/25/1990CA1274563A1 Symmetrical percussion switch using a dead point overshoot device
09/12/1990EP0386768A2 Circuit device having circuit breaking and leakage current detecting functions
09/12/1990CN2062031U All-automatic all-function refrigerator protector
09/06/1990CA2010889A1 Field installable heavy duty undervoltage release
09/05/1990EP0164407B1 Shock hazard protection system
08/1990
08/29/1990EP0384156A2 Ambient Compensator for thermal overload relay
08/21/1990US4951021 Electromagnetic switching apparatus having dynamically balanced latch trip
08/21/1990US4951015 Circuit breaker with moving magnetic core for low current magnetic trip
08/08/1990CN2060268U Protector for loss of phase
08/07/1990US4947284 Field-installable heavy duty undervoltage release
07/1990
07/31/1990US4945329 Tripping device with burning prevention switch
07/25/1990EP0378679A1 Circuit breaker auxiliary device snap-on package.
07/25/1990CN2059766U Time-limit overcurrent cut-off device
07/11/1990EP0377385A1 Operating mechanism for a multiple fault-current protective switch with a rotary crossbar
07/04/1990CN2059032U Automatic protective switch for electric motor (appliances)
07/04/1990CN2059029U Leakage-protective ac contactor
07/03/1990US4939615 Latching and release system for ground fault receptacle
06/1990
06/27/1990EP0375568A1 Modulator assembly device for a multipole differential circuit breaker
06/26/1990US4937706 Ground fault current protective device
06/20/1990CN2058531U Ceramic bipolar plug-in insurance type leakage protector
06/06/1990EP0371887A1 Modular breaker with an auxiliary tripping block with independent or automatic resetting
06/06/1990EP0371416A2 Thermal relay
06/06/1990EP0371415A2 Thermal relay with a bimetal compensation
05/1990
05/31/1990DE3840064A1 Thermal relay having a switching rocker
05/29/1990US4930038 Current overload tripping device with leading tripping action
05/15/1990US4926149 Protected electric switching apparatus and a device for fixing same
05/10/1990DE3840062C1 Thermal relay having bimetallic compensation
05/02/1990CN2056790U Electric leakage protector
04/1990
04/25/1990EP0365274A2 Resettable ground fault circuit interrupter
04/11/1990CN1007568B Ground fault receptacle with compact component arrangement
04/10/1990CA1267670A1 Circuit breaker with adjustable thermal trip unit
04/03/1990US4913503 Molded case circuit breaker actuator-accessory unit reset mechanism
03/1990
03/28/1990EP0360215A2 Inversion spring for thermal overload relay and method for making the same
03/13/1990US4908594 Thermal overload relay
03/07/1990CN2054205U Electromagnetic type electrical controller with under-voltage protection
02/1990
02/28/1990CN2053795U Thermorelay with loss-of-phase protection
02/28/1990CN2053794U Automatic single phase leak switch
02/28/1990CN1040112A Crossbar assembly
02/28/1990CN1040111A Modular option deck assembly
02/26/1990EP0296183A4 Circuit breaker contact assembly.
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