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Class Information
Number: 361/96
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > With specific current responsive fault sensor > With time delay protective means > With instantaneous override > With multiple timing characteristics (e.g., short, long)
Description: Subject matter wherein the protective means is activated after a short, intermediate, long, etc., time delay depending on the magnitude of the fault sensed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7538519 |
Information handling system with battery protected from non-permanent failures |
May. 26, 2009 |
| 7218496 |
Overcurrent protection circuit |
May. 15, 2007 |
| 7064946 |
Electronic fuse |
Jun. 20, 2006 |
| 6882511 |
Electronic earth leakage current device |
Apr. 19, 2005 |
| 6842322 |
Electronic trip device comprising a capacitor for supply of a trip coil |
Jan. 11, 2005 |
| 6747860 |
Power-supply feedthrough protection circuit for 5-volt failsafe CMOS drivers |
Jun. 8, 2004 |
| 6731487 |
Method and devices for optimizing power consumption of trip units containing microprocessors |
May. 4, 2004 |
| 6721154 |
Apparatus and method for representing protection device trip response |
Apr. 13, 2004 |
| 6696708 |
Electrostatic discharge protection apparatus |
Feb. 24, 2004 |
| 6633474 |
Selective electronic tripping element |
Oct. 14, 2003 |
| 6552675 |
Electrical protection device with analog-to-digital converter of the sigma-delta type |
Apr. 22, 2003 |
| 6542345 |
Circuit breaker |
Apr. 1, 2003 |
| 6534991 |
Connection tester for an electronic trip unit |
Mar. 18, 2003 |
| 6535370 |
Apparatus and method for representing protection device trip response |
Mar. 18, 2003 |
| 6529358 |
Driver protection circuit for preventing damage due to line contact with ground or supply voltage |
Mar. 4, 2003 |
| 6504694 |
Circuit breaker system with ASM instantaneous overcurrent indication |
Jan. 7, 2003 |
| 6466029 |
Power line testing device with signal generator and signal detector |
Oct. 15, 2002 |
| 6377431 |
Non-automatic power circuit breaker including trip mechanism which is disabled after closure of separable contacts |
Apr. 23, 2002 |
| 6295190 |
Circuit breaker arrangement with integrated protection, control and monitoring |
Sep. 25, 2001 |
| 6279115 |
Circuit arrangement for monitoring of an electric tripping device for low-voltage switches |
Aug. 21, 2001 |
| 6195243 |
Method and apparatus for adaptive configuration and control in a network of electronic circuit breakers |
Feb. 27, 2001 |
| 6185482 |
System and method for rms overcurrent backup function |
Feb. 6, 2001 |
| 6175479 |
Instantaneous protection device and method for a circuit breaker |
Jan. 16, 2001 |
| 6081729 |
Encapsulated tubular conductor |
Jun. 27, 2000 |
| 6018300 |
Fault monitoring |
Jan. 25, 2000 |
| 6011416 |
Switch circuit having excess-current detection function |
Jan. 4, 2000 |
| 5943204 |
Electronic trip unit with dedicated override current sensor |
Aug. 24, 1999 |
| 5926355 |
Electrical switching apparatus employing battery-powered indicator |
Jul. 20, 1999 |
| 5877691 |
Circuit breaker with a circuit breaker unit and processing, calibration and communication modules |
Mar. 2, 1999 |
| 5875088 |
Electrical switching apparatus employing interlocks for first and second trip functions |
Feb. 23, 1999 |
| 5856903 |
Matching overcurrent characteristic curves |
Jan. 5, 1999 |
| 5838776 |
Power controller for a heating/air conditioning unit |
Nov. 17, 1998 |
| 5825643 |
Programming device for a circuit breaker |
Oct. 20, 1998 |
| 5747955 |
Current sensing module for a variable speed AC motor drive for use with a treadmill |
May. 5, 1998 |
| 5691871 |
Test circuit for electrical switching device |
Nov. 25, 1997 |
| 5680052 |
Fault indicator tester with test bar and test chamber |
Oct. 21, 1997 |
| 5656931 |
Fault current sensor device with radio transceiver |
Aug. 12, 1997 |
| 5636134 |
Intelligent circuit breaker providing synchronous switching and condition monitoring |
Jun. 3, 1997 |
| 5627716 |
Overcurrent protection device |
May. 6, 1997 |
| 5581471 |
Method and apparatus for storing electric power measurements |
Dec. 3, 1996 |
| 5500781 |
Digital circuit interrupter with multiple accessory function |
Mar. 19, 1996 |
| 5471359 |
Polyphase current monitor and control system |
Nov. 28, 1995 |
| 5426592 |
Circuit breaker trip unit which automatically adapts to operated with a particular display module |
Jun. 20, 1995 |
| 5367427 |
Overcurrent trip unit with indication of dependency of trip functions |
Nov. 22, 1994 |
| 5335135 |
Fault recording system for an electric power trip unit |
Aug. 2, 1994 |
| 5331501 |
Electrical switching apparatus with digital trip unit and memory reset |
Jul. 19, 1994 |
| 5311392 |
Dual processor electric power trip unit |
May. 10, 1994 |
| 5307230 |
Circuit breaker with protection against sputtering arc faults |
Apr. 26, 1994 |
| 5270898 |
Sure chip plus |
Dec. 14, 1993 |
| 5216352 |
Solid state current controlled interruption system |
Jun. 1, 1993 |
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