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2017
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Invention
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A modular system for protecting an electrical circuit. A system for protecting an electrical circ... |
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2016
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Invention
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An arc fault current detector. An arc fault current detector for an electricity supply having at ... |
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2013
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Invention
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Electromechanical switching circuit with memory. An electromechanical switching circuit comprises... |
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2012
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Invention
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A device for detecting a fault in an ac supply. A device for detecting a fault in an AC supply co... |
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Invention
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Electromechanical relay circuit. A relay circuit comprises an electromechanical relay (RLA) havin... |
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2011
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Invention
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Dc & ac current detection circuit. A circuit for detecting a DC current in a conductor (L1) inclu... |
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Invention
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An arc fault detector for ac or dc installations. An arc fault detector comprises a current trans... |
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2007
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Invention
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Ground fault protection circuit. A switching circuit, e.g. an RCD, comprises a pair of mechanical... |
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Invention
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Switching circuit. A switching circuit, e.g. an RCD, comprises a pair of mechanical contacts (M) ... |
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2005
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Invention
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Residual current device with double grounded neutral fault detection. A residual current device (... |
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2004
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Invention
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Residual current device with double grounded neutral fault detection. A residual current device i... |
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2003
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Invention
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Residual current detection circuit. A residual current detection circuit comprises a current tran... |
