VERSATILE CIRCUIT BREAKER FOR DETECTING VARIOUS FAILURE ON POWER LINES AND LOADS

摘要

PURPOSE: A power breaking apparatus for sensing the abnormal situation of a load and an electric circuit is provided to break an AC line with a load using the electric potential of the AC line which is connected with a cut-off switching device. CONSTITUTION: An arc detector(11) detects the arc of AC power source lines(AC1,AC2). A overload detection part(12) detects a overload state. An electricity leakage detector(13) detects an electric leakage state. A cut-off switching device(14) is electrified when an abnormal situation is detected. A cut-off part(15) controls the conductive state of the AC power source line. A DC operation voltage generating part(16) supplies a direct current operation voltage.