Fault current protection system for electrical load has control device monitoring operation of fault current protection device for operating release device for disconnection of current circuit upon its failure

摘要

The fault current protection system has a fault current protection device (1) for detecting a fault current and disconnecting the current circuit, a control device (3) for monitoring the fault current protection device and a release device (2) for disconnection of the current circuit in response to a control signal from the control device upon failure of the fault current protection device.