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Browse by Category: Main > Electrical & Energy
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:
1 2 3 4

Patent Number Title Of Patent Date Issued
8605393 Compressor protection and grid fault detection device Dec. 10, 2013
8494178 Avoiding audio feedback Jul. 23, 2013
8422186 Low level voltage programmable logic control Apr. 16, 2013
8390973 Circuit breaker zone selective interlock for differentiated faults and method of operation Mar. 5, 2013
8385038 Circuit breaker switching control system Feb. 26, 2013
8270136 Circuit breaker zone selective interlock for differentiated faults and method of operation Sep. 18, 2012
8184419 Power supply with current limiting circuits May. 22, 2012
8054605 Power supply controller Nov. 8, 2011
8018703 Auxiliary device and data transmission method, auxiliary unit and electrical circuit breaker comprising said device Sep. 13, 2011
8014115 Circuit breaker having separate restrained and unrestrained zone selective interlock setting capability Sep. 6, 2011
7889474 Manually-controlled arc flash energy reduction system and method for circuit breaker trip units Feb. 15, 2011
7696892 Protection device for an oscillating power circuit Apr. 13, 2010
7646575 Manually-controlled arc flash energy reduction system and method for circuit breaker trip units Jan. 12, 2010
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

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