H01H 79/00
Protective switches in which excess current causes the closing of contacts
Official title: Protective switches in which excess current causes the closing of contacts, e.g. for short-circuiting the apparatus to be protected {(H01H39/004 takes precedence)}
H01H79/00 (Protective switches in which excess current causes the closing of contacts) appears on 100 US grants and 80 published applications in this corpus.
Search patents in H01H- Granted patents
- 100
- Published applications
- 80
- Assignees
- 71
- Inventors
- 224
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 4 | 6 |
| 2004 | 1 | 0 |
| 2005 | 4 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 4 |
| 2010 | 0 | 4 |
| 2011 | 2 | 6 |
| 2012 | 3 | 3 |
| 2013 | 6 | 5 |
| 2014 | 3 | 4 |
| 2015 | 6 | 2 |
| 2016 | 3 | 6 |
| 2017 | 5 | 4 |
| 2018 | 3 | 2 |
| 2019 | 4 | 4 |
| 2020 | 3 | 8 |
| 2021 | 5 | 5 |
| 2022 | 7 | 7 |
| 2023 | 1 | 3 |
| 2024 | 3 | 1 |
| 2025 | 6 | 4 |
By publication year. Applications have been published since 2001.
Recent patents
- High voltage bypass device, voltage source converter and operating method2 Sep 2025US 12,406,821 B2Hitachi Energy Ltd
- Switch for interruption of a direct current circuit powered by two electric voltage sources24 Jun 2025US 12,340,962 B2ETI Elektroelement, D.O.O.
- Pyrotechnic circuit breaker assembly for an aircraft, and an aircraft comprising such an assembly10 Jun 2025US 12,327,701 B2Airbus Operations GmbH
- Switching device and voltage limiting device having a switching device29 Apr 2025US 12,288,658 B2Rail Power Systems GmbH
- Circuit breaker trip device28 Jan 2025US 12,211,662 B2
- Electrical connection switching member having penetrating body21 Aug 2025US 2025/0266226 A1
- Electric circuit switching device29 May 2025US 2025/0174418 A1Daicel Corporation
- Electric circuit switching device29 May 2025US 2025/0174419 A1Daicel Corporation
- High voltage bypass device, voltage source converter and operating method3 Apr 2025US 2025/0112013 A1Hitachi Energy Ltd
- Relay19 Sep 2024US 2024/0312746 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
Most cited
By later US patents
- Arcing fault protection system for a switchgear enclosure127US 6,141,192 ASquare D Company · 2000
- Arcing fault protection system for a switchgear enclosure60US 5,933,308 ASquare D Company · 1999
- Method and apparatus for interrupting a current carrying path in a multiphase circuit52US 6,208,495 B1Rockwell Technologies, LLC · 2001
- Shorting switch and system to eliminate arcing faults in power distribution equipment36US 6,657,150 B1Eaton Corporation · 2003
- Arcing fault and arc flash protection system having a high-speed switch36US 8,319,136 B2Schneider Electric USA, Inc. · 2012