| 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) |
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| 05/16/1978 | US4090159 Circuit breaker with improved trip means |
| 04/25/1978 | US4086643 Combination plug and power cut-off unit |
| 04/25/1978 | US4086549 Circuit interrupter relay |
| 04/11/1978 | US4084203 Ground fault receptacle |
| 03/28/1978 | US4081852 Ground fault circuit breaker |
| 03/14/1978 | US4079344 Portable ground fault circuit interrupting device |
| 02/28/1978 | US4077025 Current limiting circuit interrupter |
| 02/21/1978 | US4075584 Undervoltage release device for circuit breakers |
| 01/10/1978 | US4068201 Manual starter with low voltage release |
| 12/06/1977 | US4061993 Tripping device for pre-selection of function for electrical equipment |
| 09/13/1977 | US4048608 Circuit breaker |
| 09/13/1977 | US4048599 Electric switching device |
| 08/23/1977 | US4044224 Protective circuit for dishwasher heating element |
| 08/09/1977 | US4041423 Undervoltage release for circuit breaker |
| 08/02/1977 | US4039903 Remote controlled mechanical release or lock-in electrical path between battery and a load |
| 07/19/1977 | US4037185 Ground fault circuit breaker with trip indication |
| 07/05/1977 | US4034266 Electric wall receptacle with ground fault protection |
| 05/24/1977 | US4025821 Circuit breaker with improved trip means having a high rating shunt trip |
| 05/17/1977 | US4024366 Toggle lever switching mechanism for an automatic switching apparatus including a low-voltage tripping device |
| 05/03/1977 | US4021729 Cross-field ground fault sensor |
| 04/05/1977 | US4016518 Circuit breaker with improved single coil actuator and undervoltage release mechanism |
| 03/22/1977 | US4013929 Multiple duty components of a ground fault receptacle |
| 03/22/1977 | US4013926 Circuit breaker with improved trip actuator and undervoltage release mechanism |
| 03/01/1977 | US4010432 Electrical receptacle equipped with ground fault protection |
| 03/01/1977 | US4010431 Switch for electrical wall receptacle with ground fault protection |
| 03/01/1977 | US4010339 Spring contact switch |
| 02/01/1977 | US4006440 Terminal structure for electromagnetic contactor |
| 01/11/1977 | US4002951 Electrical receptacle mounted ground fault interrupter with automatic plug insertion testing |
| 01/04/1977 | US4001804 Ground fault protection for electrical power distribution systems |
| 01/04/1977 | US4001652 Ground fault receptacle with improved stationary contact mounting and backing |
| 01/04/1977 | US4001647 Ground fault receptacle with unitary support of gfci module and switching mechanism |
| 12/21/1976 | US3999103 Multi-pole ground fault circuit breaker |
| 10/12/1976 | US3986155 Modular multipole circuit breaker with external trip control |
| 10/05/1976 | US3984736 Leakage protective device |
| 08/03/1976 | US3973230 Circuit breaker accessories incorporating improved auxiliary switch |
| 07/20/1976 | US3970975 Ground fault circuit breaker with ground fault trip indicator |
| 05/18/1976 | US3958204 Fused gfi unit |
| 05/18/1976 | US3958197 High interrupting capacity ground fault circuit breaker |
| 04/13/1976 | US3950677 Housing mounting arrangement for ground fault circuit interrupter |
| 04/06/1976 | US3949336 Sequential resetting circuit interrupter |
| 02/10/1976 | US3938065 Push-button operated bipolar faulty current protective switch |
| 01/06/1976 | US3931601 Receptacle device ground fault circuit interrupter |