Patents
Sitemap › H01 - Basic electric elements › H01H - Electric switches; Relays; Selectors; Emergency protective devices › H01H 71 - Details of the protective switches or relays covered by groups
Patents for H01H 71 - Details of the protective switches or relays covered by groups (18,450)
10/1981
10/27/1981US4297554 Time delay switch mechanism
10/21/1981EP0038291A1 Motor drive for low-voltage protective switch
10/21/1981EP0038289A1 Power drive for electric switching devices
10/21/1981EP0038288A1 Mechanical drive for direct on and off switching of a low-voltage protective switch
10/21/1981EP0038287A1 Rotary handle for manual control of a power drive
10/21/1981EP0038285A1 Power drive for electric switching devices with an actuating slide
10/20/1981US4296396 Manual electric switch with thermal release
10/14/1981EP0037490A1 Release system of an automatic circuit breaker for the interruption of a circuit
10/13/1981US4295025 Circuit breaker with electromechanical trip means
10/13/1981CA1110684A1 Circuit breaker molded housing
10/07/1981EP0037295A1 High-speed circuit breaker provided with a shock-proof device
10/06/1981CA1110302A1 Circuit breaker having improved movable contact position indicator
10/06/1981CA1110299A1 Thermal magnetic circuit breaker
09/1981
09/30/1981EP0036417A1 Cut off device monitored by a computer.
09/29/1981CA1109910A1 Circuit breaker with external accessory mounting means
09/29/1981CA1109906A1 Magnetic latch device for a clapper type contactor
09/22/1981US4291291 Circuit breaker provided with collapsible telescoping linkage
09/22/1981CA1109512A1 Ratcheting mechanism for circuit breaker motor operator
09/16/1981EP0035693A1 Switching mechanism for electrical installation switch gear
09/09/1981EP0035083A1 Protective switch with a release operable by hand
09/08/1981US4288770 Thermal override for static trip circuit breakers
09/08/1981US4288769 Ambient temperature responsive trip device for static trip circuit breakers
09/08/1981US4288768 Electrical full protection circuit breaker
09/08/1981CA1108670A1 Circuit breaker magnetic trip device
09/02/1981EP0034966A1 Electric actuating mechanism for a low tension circuit breaker
08/1981
08/25/1981US4286130 Low voltage circuit breaker with subdivided insulating housing
08/18/1981US4284968 Adjustable electromagnetic tripping mechanism for a circuit-breaker
08/18/1981CA1107333A1 Turning grip drive for rocker-arm actuated power switch
08/18/1981CA1107332A1 Actuating mechanism with an auxiliary switch for an electrically lockable power switch
08/18/1981CA1107326A1 Automatic magnetic switch
08/05/1981EP0033273A2 Circuit breaking relays
08/05/1981EP0033190A1 Overcurrent protection devices
08/04/1981US4282500 Ground fault circuit interrupting device
07/1981
07/29/1981EP0032870A1 Mechanism, mountable in a casing, for operating the displacement of a lever, and application of this mechanism as a circuit-breaker
07/29/1981EP0032666A2 Circuit interrupter trip unit
07/28/1981US4281359 Static trip unit for molded case circuit breakers
07/21/1981CA1105552A1 Solenoid coil surrounding magnetic circuit gap
07/14/1981US4278958 Electromagnetically operated multi-pole circuit breaker
07/08/1981EP0031577A1 Bimetal assembly for a thermally releasing switchgear
07/08/1981EP0031474A2 Release for a fault current protective switch
07/07/1981US4277664 Circuit breaker structure
07/07/1981CA1104638A1 Overcurrent protection equipment
07/07/1981CA1104619A1 Low profile multi-pole circuit breaker having multiple toggle springs
06/1981
06/30/1981US4276527 Multipole electrical circuit breaker with improved interchangeable trip units
06/30/1981US4276457 Circuit breaker having planar cradle with edge portions providing relatching and contact kicker functions
06/24/1981EP0030872A2 Current-limiting circuit breaker adapter
06/24/1981EP0030651A1 Electromagnetic switching device
06/23/1981US4275370 Electrical overload circuit breaker
06/16/1981US4274069 Locking arrangement for electric circuit breakers
06/16/1981US4273979 Low-voltage circuit breaker with means for limiting contact lifting
06/09/1981US4272750 Power breaker apparatus
05/1981
05/26/1981US4270113 Thermal overload relay
05/26/1981US4270035 Snap on mounting clip for circuit breakers
05/20/1981EP0028958A1 Circuit-breaking switch, its release mechanism
05/20/1981EP0028740A1 Switchgear with a contact arrangement
05/19/1981CA1101474A1 Circuit interrupter with improved adjustable trip unit
05/13/1981EP0028389A1 Low voltage-protective line switch
05/12/1981US4267539 Circuit breaker having a cam for external adjustment of its trip point
05/12/1981US4267419 Circuit breaker structure with shock absorbers
05/12/1981CA1101027A1 Trip bar assembly for a multi-pole circuit breaker
05/06/1981EP0028013A1 Power circuit breaker provided with a casing
05/05/1981US4266209 Circuit breaker handle and lost motion connected shield
05/05/1981US4266105 Biasing means for combination actuator
04/1981
04/22/1981EP0027404A1 Miniature electric circuit breaker in moulded case
04/21/1981US4263573 Protecting against overcurrents
04/21/1981US4263492 Circuit breaker with anti-bounce mechanism
04/21/1981CA1099772A1 Electromagnetically operated circuit breaker having compartmentalised housing
04/21/1981CA1099770A1 Thermal switch operated by a fusible solid pellet
04/16/1981WO1981001092A1 Cut off device monitored by a computer
04/15/1981EP0026804A1 Hermetically closed release mechanism with permanent magnet for protective fault current switch
04/08/1981EP0026416A1 Switch mechanism for circuit breaker
04/07/1981US4260969 Low voltage circuit breaker with an electromagnetic tripping device
04/07/1981US4260865 Circuit breaker
03/1981
03/31/1981CA1098569A1 Hermetic thermally operated protector for an electric motor
03/24/1981US4258349 Double-pole rocker switch with thermal protection
03/24/1981CA1098155A1 Resettable thermal cut-off fuse
03/17/1981CA1097715A1 Anti-rebound and contact kicker means for circuit breaker
03/10/1981US4255732 Current limiting circuit breaker
03/10/1981CA1097394A1 Tripping device for an overload circuit breaker
02/1981
02/24/1981US4253075 Latching system for contact operating mechanism
02/24/1981CA1096426A1 Electromagnet an extremely inverse time overcurrent protective relay
02/17/1981US4251789 Circuit breaker trip indicator and auxiliary switch combination
02/17/1981US4251702 Circuit breaker having multiple spring actuating mechanisms
02/17/1981CA1095959A1 Circuit interrupter
02/17/1981CA1095958A1 Means connecting circuit breaker and auxiliary feature modules
02/17/1981CA1095953A1 Manually and electromagnetically operated circuit breaker
02/10/1981US4250480 Apparatus and method of monitoring automatic safety control switches of electrical apparatus
02/10/1981CA1095571A1 Circuit breaker mounted within an explosion-proof enclosure
02/10/1981CA1095566A1 Current limiter assembly for a circuit breaker
02/04/1981EP0023277A1 Selective protection device
02/03/1981US4249152 Magnetic trip adjustment based on spring load variation
02/03/1981US4249151 Apparatus for variably adjusting a magnetic level with a translating spring force
01/1981
01/27/1981CA1094615A1 Contact control assembly for a circuit breaker
01/20/1981US4246557 Bell alarm for circuit breaker
01/20/1981CA1094150A1 Line protector for a communications circuit
01/20/1981CA1094137A1 Resilient anti-rebound latch for circuit breaker contacts
01/20/1981CA1094136A1 Test means for circuit breaker automatic trip mechanism
01/20/1981CA1094135A1 Resetting means for trip free circuit breaker contact operating mechanism
01/13/1981US4245204 Circuit breaker magnetic trip device
01/13/1981US4245203 Circuit interrupter with pivoting contact arm having a clinch-type contact
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