H01H 83/00
Protective switches
Official title: Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
H01H83/00 (Protective switches) appears on 1,362 US grants and 1,032 published applications in this corpus.
Search patents in H01H- Granted patents
- 1,362
- Published applications
- 1,032
- Assignees
- 396
- Inventors
- 1,942
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 23 | 0 |
| 1978 | 14 | 0 |
| 1979 | 6 | 0 |
| 1980 | 10 | 0 |
| 1981 | 11 | 0 |
| 1982 | 8 | 0 |
| 1983 | 13 | 0 |
| 1984 | 6 | 0 |
| 1985 | 12 | 0 |
| 1986 | 14 | 0 |
| 1987 | 20 | 0 |
| 1988 | 9 | 0 |
| 1989 | 22 | 0 |
| 1990 | 13 | 0 |
| 1991 | 11 | 0 |
| 1992 | 18 | 0 |
| 1993 | 11 | 0 |
| 1994 | 16 | 0 |
| 1995 | 10 | 0 |
| 1996 | 26 | 0 |
| 1997 | 12 | 0 |
| 1998 | 29 | 0 |
| 1999 | 24 | 0 |
| 2000 | 20 | 0 |
| 2001 | 38 | 3 |
| 2002 | 33 | 34 |
| 2003 | 34 | 37 |
| 2004 | 22 | 36 |
| 2005 | 29 | 34 |
| 2006 | 42 | 46 |
| 2007 | 33 | 46 |
| 2008 | 35 | 32 |
| 2009 | 42 | 39 |
| 2010 | 28 | 49 |
| 2011 | 36 | 36 |
| 2012 | 44 | 39 |
| 2013 | 36 | 40 |
| 2014 | 38 | 40 |
| 2015 | 35 | 42 |
| 2016 | 38 | 43 |
| 2017 | 38 | 50 |
| 2018 | 37 | 52 |
| 2019 | 63 | 48 |
| 2020 | 56 | 49 |
| 2021 | 44 | 39 |
| 2022 | 55 | 42 |
| 2023 | 45 | 46 |
| 2024 | 35 | 41 |
| 2025 | 36 | 41 |
| 2026 | 20 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 83/20Operated by excess current as well as by some other abnormal electrical622
- H01H 83/02Operated by earth fault currents578
- H01H 83/14Operated by imbalance of two or more currents or voltages185
- H01H 83/12Operated by voltage falling below a predetermined value130
- H01H 83/10Operated by excess voltage81
- H01H 83/06Operated by current falling below a predetermined value7
- H01H 83/08Operated by reversal of dc7
- H01H 83/18Operated by abnormal product of, or abnormal phase angle between, voltage and5
All 9 subgroupsShow fewer
Recent patents
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- Preventing nuisance trips of ground-fault circuit interruptors electrically coupled to climate control systems29 Sep 2026US 12,749,641 B2Trane International Inc.
- Continuously grounded travel gate system, barrier system and related methods15 Sep 2026US 12,738,393 B2Vanquish Fencing, Inc.
- Active arc fault circuit interrupters with solid-state components15 Sep 2026US 12,738,437 B2Siemens Industry, Inc.
- Ground fault circuit interrupter device and related electrical connection devices and electrical appliances15 Sep 2026US 12,738,438 B2
- Electric testing systems8 Oct 2026US 2026/0309779 A1
- Modular cable24 Sep 2026US 2026/0287679 A1Channel Well Technology Co., Ltd.
- Leakage Protection Plug10 Sep 2026US 2026/0269544 A1Zhejiang Yuchuang Electronic Technology Co, Ltd.
- Leakage protection device and electrical device27 Aug 2026US 2026/0253828 A1Sensata Technologies Changzhou Co., Ltd.
- Selectable shunt voltage for circuit breaker6 Aug 2026US 2026/0229872 A1Vertiv Corporation
Most cited
By later US patents
- Reset lockout for circuit interrupting device193US 6,040,967 ALeviton Manufacturing Co., Inc. · 2000
- Method for power distribution system components identification, characterization and rating167US 6,909,942 B2General Electric Company · 2005
- Ground fault circuit interrupter plug162US 5,661,623 AHubbell Incorporated · 1997
- Circuit interrupting device with reverse wiring protection161US 6,246,558 B1Leviton Manufacturing Co., Inc. · 2001
- Ground fault circuit interrupting system156US 4,595,894 ALeviton Manufacturing Co., Inc. · 1986