Automatic circuit breaker with auxiliary short-circuit and fuse arrangement with a plurality of such automatic circuit breakers

摘要

Automatic circuit breaker (2) for protecting a phase (4, 5, 6) with an input terminal (7), an output terminal (8), a current path (12) electrically connecting the input terminal (7) and the output terminal (8), a disconnecting device (13), which is arranged in the current path (12) and designed to interrupt it upon actuation, a monitoring device (14), which is designed to monitor the current in the current path (12), wherein the monitoring device (12) 14) is designed to perform a continuous current monitoring and a short-circuit current monitoring, characterized in that the automatic circuit breaker (2) further comprises a discharge terminal (9), a discharge path (15) at one end with the current path (12) between the separation device ( 13) and the output terminal (8) and at its other end to the Ableitklemme (9) is connected, a connecting device (16) disposed in the Ableitpfad (15) and designed, this at an actuation, wherein the monitoring device (14) is designed to actuate the disconnecting device (13) and the connecting device (16) upon detection of an overcurrent.