Patents
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)
05/1978
05/16/1978US4090159 Circuit breaker with improved trip means
04/1978
04/25/1978US4086643 Combination plug and power cut-off unit
04/25/1978US4086549 Circuit interrupter relay
04/11/1978US4084203 Ground fault receptacle
03/1978
03/28/1978US4081852 Ground fault circuit breaker
03/14/1978US4079344 Portable ground fault circuit interrupting device
02/1978
02/28/1978US4077025 Current limiting circuit interrupter
02/21/1978US4075584 Undervoltage release device for circuit breakers
01/1978
01/10/1978US4068201 Manual starter with low voltage release
12/1977
12/06/1977US4061993 Tripping device for pre-selection of function for electrical equipment
09/1977
09/13/1977US4048608 Circuit breaker
09/13/1977US4048599 Electric switching device
08/1977
08/23/1977US4044224 Protective circuit for dishwasher heating element
08/09/1977US4041423 Undervoltage release for circuit breaker
08/02/1977US4039903 Remote controlled mechanical release or lock-in electrical path between battery and a load
07/1977
07/19/1977US4037185 Ground fault circuit breaker with trip indication
07/05/1977US4034266 Electric wall receptacle with ground fault protection
05/1977
05/24/1977US4025821 Circuit breaker with improved trip means having a high rating shunt trip
05/17/1977US4024366 Toggle lever switching mechanism for an automatic switching apparatus including a low-voltage tripping device
05/03/1977US4021729 Cross-field ground fault sensor
04/1977
04/05/1977US4016518 Circuit breaker with improved single coil actuator and undervoltage release mechanism
03/1977
03/22/1977US4013929 Multiple duty components of a ground fault receptacle
03/22/1977US4013926 Circuit breaker with improved trip actuator and undervoltage release mechanism
03/01/1977US4010432 Electrical receptacle equipped with ground fault protection
03/01/1977US4010431 Switch for electrical wall receptacle with ground fault protection
03/01/1977US4010339 Spring contact switch
02/1977
02/01/1977US4006440 Terminal structure for electromagnetic contactor
01/1977
01/11/1977US4002951 Electrical receptacle mounted ground fault interrupter with automatic plug insertion testing
01/04/1977US4001804 Ground fault protection for electrical power distribution systems
01/04/1977US4001652 Ground fault receptacle with improved stationary contact mounting and backing
01/04/1977US4001647 Ground fault receptacle with unitary support of gfci module and switching mechanism
12/1976
12/21/1976US3999103 Multi-pole ground fault circuit breaker
10/1976
10/12/1976US3986155 Modular multipole circuit breaker with external trip control
10/05/1976US3984736 Leakage protective device
08/1976
08/03/1976US3973230 Circuit breaker accessories incorporating improved auxiliary switch
07/1976
07/20/1976US3970975 Ground fault circuit breaker with ground fault trip indicator
05/1976
05/18/1976US3958204 Fused gfi unit
05/18/1976US3958197 High interrupting capacity ground fault circuit breaker
04/1976
04/13/1976US3950677 Housing mounting arrangement for ground fault circuit interrupter
04/06/1976US3949336 Sequential resetting circuit interrupter
02/1976
02/10/1976US3938065 Push-button operated bipolar faulty current protective switch
01/1976
01/06/1976US3931601 Receptacle device ground fault circuit interrupter
1 ... 41 42 43 44 45 46 47 48 49 50 51