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Class Information
Number: 361/49
Name: Electricity: electrical systems and devices > Safety and protection of systems and devices > Ground fault protection > In a single phase system
Description: Subject matter wherein the load in a single phase system is protected from an unintentional grounding, usually by removing the power from the load, when a ground fault is detected by a sensing means.

Sub-classes under this class:

Class Number Class Name Patents
361/50 With more than two wires 119

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8605394 Apparatus, method, and system for monitoring leakage current and detecting fault conditions in electrical systems Dec. 10, 2013
8547669 Arc fault mitigation for photovoltaic systems Oct. 1, 2013
8537509 Ground fault detecting and controlling method for parallel-structured high voltage system Sep. 17, 2013
8537510 Method and apparatus for monitoring the isolation of an IT-Grid Sep. 17, 2013
8482887 Ground-fault circuit interrupter with circuit condition detection function Jul. 9, 2013
8462471 Circuit interrupting device with high voltage surge protection Jun. 11, 2013
8459372 Voltage sensing drill with automatic shut-off Jun. 11, 2013
8456782 Cost effective design for a current transformer with an integrated magnetic actuator Jun. 4, 2013
8416548 Device for controlling a MOS transistor Apr. 9, 2013
8405939 Protective device for an electrical supply facility Mar. 26, 2013
8355226 Ground fault sensing device Jan. 15, 2013
8331067 Method and apparatus for moving material Dec. 11, 2012
8300368 Circuit interrupting device with end-of life testing, reverse wiring and high voltage surge capability Oct. 30, 2012
8259423 Automotive vehicle charge port with fault interrupt circuit Sep. 4, 2012
8248192 Pulse activated magnetic trip/reset mechanism for a ground fault circuit interrupter Aug. 21, 2012
8233251 Circuit interrupting device with interconnecting reset and test buttons Jul. 31, 2012
8213138 Circuit breaker with arc fault detection and method of operation Jul. 3, 2012
8174804 Circuit breakers with ground fault and overcurrent trip May. 8, 2012
8154832 Leak detection and leak protection circuit Apr. 10, 2012
8139328 Fault circuit interrupting device with symmetrical inputs Mar. 20, 2012
8136890 Shock proof devices and methods Mar. 20, 2012
8072718 Protective device Dec. 6, 2011
8064174 Leakage current detection and interruption circuit with improved shield Nov. 22, 2011
8054590 Ground-fault circuit interrupter with circuit condition detection function Nov. 8, 2011
8045303 Building service ground fault interrupter Oct. 25, 2011
8018697 Ground fault protection circuit Sep. 13, 2011
7986500 Ground fault detection in an ungrounded electrical system Jul. 26, 2011
7978446 High voltage ground fault detection system Jul. 12, 2011
7948723 Method and apparatus for measuring DC current in an AC generator May. 24, 2011
7948722 Differential protection device May. 24, 2011
7907372 Systems and methods for reducing leakage current hazards using an active shunt filter Mar. 15, 2011
7852607 Protection device with lockout test Dec. 14, 2010
7835120 Circuit breakers with ground fault and overcurrent trip Nov. 16, 2010
7790982 Electrical wiring device with a center nightlight and a plurality of safety features Sep. 7, 2010
7773353 Power supply device, electrically-driven vehicle incorporating power supply device, and method of controlling power supply device Aug. 10, 2010
7764473 Method of detecting a ground fault and electrical switching apparatus employing the same Jul. 27, 2010
7751161 Leakage current detection and interruption circuit Jul. 6, 2010
7696892 Protection device for an oscillating power circuit Apr. 13, 2010
7636224 Method and safety device for ground fault circuit Dec. 22, 2009
7633727 Arc fault circuit interrupter and series arc fault detection method using plural high frequency bands Dec. 15, 2009
7633728 Arc fault circuit interrupter and method of parallel arc fault detection Dec. 15, 2009
7626788 Control circuit of ground fault circuit interrupter (GFCI) Dec. 1, 2009
7623329 Leakage current detection and interruption circuit with improved shield Nov. 24, 2009
7558033 Arc fault circuit interrupter and method of parallel and series arc fault detection Jul. 7, 2009
7538647 Ground fault circuit interrupter device May. 26, 2009
7443309 Self testing ground fault circuit interrupter (GFCI) Oct. 28, 2008
7440246 Circuit interrupting apparatus with remote test and reset activation Oct. 21, 2008
7432618 Inverter anti-islanding method Oct. 7, 2008
7423854 Interruption circuit with improved shield Sep. 9, 2008
7403086 Ground fault circuit interrupter with reverse wiring protection Jul. 22, 2008

1 2 3

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