NOVELTY - The sensor has a metallic measurement line including elongated and parallel sections (4, 5) in which current flows in opposite directions. The sections are connected to a portion (3) for closing the line. The measurement lines are arranged on a galvanic insulation layer (8) arranged on a portion of integrated detection circuit or under the layer placed under the circuit. The portion of the circuit has giant magnetoresistors (31-34), where each magnetoresistor has a sensitive part superposed to one of sections of the line so as to be sensitive to field created by current flowing in the line.    USE - Magnetoresistor e.g. giant or tunnel magnetoresistor, integrated sensor for measuring voltage or current of electric generator (all claimed) in automobile applications such as electric vehicle and/or hybrid vehicle i.e. thermal or electric hybrid vehicle. Can also be used in management application of charge of batteries or super capacitors, monitoring application of individual voltage of fuel cells, electrolysers, instrumentation or diagnostic application on electro technical technology requiring current or voltage measurements.    ADVANTAGE - The sensor is implemented in a compact and reliable manner. The size and conformation of magnetoresistor bridge permits obtaining linearity compatible with specifications for applications. The configuration of the sensor and the current line provides integrated fusible function in case of overvoltage or electrostatic discharge exceeding adjustable threshold. The utilization of magnetoresistors obtains configuration with reduced electric consumption. The sensor assures fuse safety function in case of over current, and is adapted to measurement of low currents compared to Hall Effect sensors. The sensor is simple to be integrated for onboard applications, and provides robust measurements in severe environment with electromagnetic disturbances. The sensor consumes less energy, and measures voltage without requiring additional components e.g. external current line and cable.    DESCRIPTION OF DRAWING(S) - The drawing shows a partial perspective view illustrating a configuration of giant magnetoresistor integrated sensor, measuring bridge and metallic measurement line    Terminals (1, 2)    Portion (3)    Elongated and parallel sections (4, 5)    Galvanic insulation layer (8)    Giant magnetoresistors (31-34)