Patent ID: 7005859

Claim:
A circuit arrangement comprising a current circuit for supplying a current consumer ( 3 ), a first current sensor ( 5 ) in the current circuit, a control unit ( 11 ) connected to the first current sensor ( 5 ), the control unit ( 11 ), via the first current sensor ( 5 ), detecting a current flow to the consumer ( 3 ), a second current sensor ( 12 ), the control unit ( 11 ) being connected to the second current sensor ( 12 ) that the control unit ( 11 ), via the second current sensor ( 12 ), detecting the current flow to the consumer ( 3 ) and monitoring the current circuit and the correct functioning of the first current sensor ( 5 ) by means of a comparison with the current detected by the first current sensor ( 5 ), a first switch ( 9 ) connected to the control unit ( 11 ), the first switch ( 9 ) being operable to decouple the consumer ( 3 ) from the current flow, and a further switch ( 13 ) connected to the control unit ( 11 ), the further switch ( 13 ) being operable to switch the second current sensor ( 12 ) into the current flow.