| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a terminal block of a house distribution board, which prevents a fire by interrupting a main breaker at the time of abnormal heat generation of a terminal part, and which detects the abnormal heat generation of terminal portions at an early stage. <P>SOLUTION: The terminal block 4 is provided with: a temperature sensor 15, which detects the temperature of screw type terminal portions 12, 13; a control circuit 16, which determines whether the detected temperature of the temperature sensor 15 exceeds a predetermined value and performs various kinds of control if the detected temperature exceeds the predetermined value; an interruption circuit 18, which actuates an earth leakage circuit breaker of the main breaker 7 by making a quasi-leakage current flow in a main electric path by the control of the control circuit 16; and a buzzer 24 of an alarming means, which announces abnormality by the control of the control circuit 16. <P>COPYRIGHT: (C)2010,JPO&INPIT |
