| Patents for H01H 71 - Details of the protective switches or relays covered by groups (18,450) |
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| 01/04/1977 | US4001742 Circuit breaker having improved operating mechanism |
| 01/04/1977 | US4001739 Circuit breaker with bell alarm and breaker lockout accessory |
| 01/04/1977 | US4001647 Ground fault receptacle with unitary support of gfci module and switching mechanism |
| 12/28/1976 | US4000484 Directly heated bimetallic strip for use in a thermal trip |
| 12/28/1976 | US4000481 Magnetic latch with shunt path barrel |
| 12/28/1976 | US4000478 Static trip molded case circuit breaker including trip interlock |
| 12/21/1976 | US3999155 Circuit interrupter including a current-limiting reactor |
| 12/14/1976 | US3997857 Integral magnetic trip and latch for a circuit interrupter |
| 10/19/1976 | US3987382 Unitized motor starter |
| 10/12/1976 | US3986155 Modular multipole circuit breaker with external trip control |
| 10/05/1976 | US3984795 Magnetic latch construction |
| 09/28/1976 | US3983454 Distribution transformer secondary circuit breaker |
| 08/17/1976 | US3975702 Circuit breaker |
| 08/17/1976 | US3975701 Circuit breaker with one-way adjustment of tripping current level |
| 08/03/1976 | US3973233 Circuit interrupter |
| 08/03/1976 | US3973230 Circuit breaker accessories incorporating improved auxiliary switch |
| 07/20/1976 | US3970976 Circuit breaker with center trip position |
| 07/20/1976 | US3970975 Ground fault circuit breaker with ground fault trip indicator |
| 06/29/1976 | US3967227 Actuator system with ambient temperature compensation |
| 06/22/1976 | US3965450 Electromagnetic device having a movable tube |
| 06/08/1976 | US3962664 Current protector |
| 05/25/1976 | US3959755 Circuit breaker with improved delay |
| 05/25/1976 | US3959754 Circuit breaker with improved trip means |
| 05/25/1976 | US3959752 Narrow multi-pole circuit breaker having bodily movable instantaneous trip structure |
| 05/25/1976 | US3959694 Electrical circuit protection apparatus |
| 05/25/1976 | US3959691 Motor protector |
| 05/18/1976 | US3958204 Fused gfi unit |
| 05/11/1976 | US3956721 Fault interrupter |
| 05/04/1976 | US3955162 Electromagnetic circuit breaker with electrical and mechanical trip indication |
| 04/27/1976 | US3953812 Electric circuit breaker |
| 04/13/1976 | US3950717 Multi-pole circuit breaker with adjustable thermal trip unit |
| 04/13/1976 | US3950716 Multi-pole circuit breaker with adjustable thermal trip unit |
| 04/13/1976 | US3950715 Circuit breaker with improved trip means |
| 04/13/1976 | US3950714 Self-adjusting circuit breaker with rotating trip assembly |
| 04/13/1976 | US3950677 Housing mounting arrangement for ground fault circuit interrupter |
| 04/06/1976 | US3949336 Sequential resetting circuit interrupter |
| 04/06/1976 | US3949331 Circuit breaker with adjustable thermal trip unit |
| 04/06/1976 | US3949330 Coil and trip mechanism |
| 03/30/1976 | US3947791 Locking device having low control power for an electrical device |
| 03/23/1976 | US3946345 Narrow multi-pole circuit breaker having inertia actuated overtravel for latch release |
| 03/16/1976 | US3944959 Electrical circuit breaker |
| 03/16/1976 | US3944957 Flux-transfer trip device for a circuit breaker |
| 03/16/1976 | US3944954 Excess current switching device |
| 03/16/1976 | US3944847 Electrical disconnect switch |
| 03/16/1976 | US3944771 Overcurrent protection device |
| 03/09/1976 | US3943477 Electrical circuit breakers |
| 02/24/1976 | US3940723 Instantaneously tripping device for circuit interrupter |
| 02/10/1976 | US3938065 Push-button operated bipolar faulty current protective switch |
| 02/03/1976 | US3936780 Safety device with thermal and electromagnetic release for a multi-contact circuit-breaker |
| 01/13/1976 | US3932825 Current limiting circuit breaker system |