Residual current sensor for a residual current device for monitoring an electrical load for a vehicle

摘要

A fault current sensor (330) for a residual current device (310) for monitoring an electrical load (340) for a vehicle (300) is presented. The fault current sensor (330) has a measuring device for measuring a differential current between a first electrical current in an electrical forward conductor (362, 364), which leads from a control device (320) for controlling the electrical load (340) to the electrical load (340) , and a second electrical current in an electrical return conductor (372, 374, 376) leading away from the electrical load (340). The fault current sensor (330) also has a signaling device for reporting a fault current to the control device (320) via the forward conductor (362, 364) as a function of a comparison of the measured differential current with a threshold value.