Patent ID: 6366434
Filing Date: 2002-04-02
Classification: H01H

Abstract:
In combination with a DC voltage supply supplying an input DC voltage, an apparatus for disconnecting an electrical load from the input DC voltage, comprising:a potential-carrying first line; a second line carrying a reference potential; said first line having an input connection to be connected to the DC voltage supply and having an output connection to be connected to the electrical load; said first and second lines carrying the input DC voltage from said input connection to said output connection; a fuse connected in series in said first line and being provided adjacent to said input connection, said fuse having a side opposite said input connection; a first relay having a first switching contact and having a side opposite said input connection; said first switching contact being connected in series in said first line on said side of said fuse opposite said input connection, said first switching contact being closed during a normal operation, and said first switching contact being opened for disconnecting said first line when a disconnection is initiated; a second relay having a second switching contact; and said second switching contact being connected in parallel between said first line and said second line on said side of said first switching contact opposite said input connection, said second switching contact being open during the normal operation, and being closed when the disconnection is initiated for short-circuiting said first line to said second line once said first switching contact is opened.