BREAKER WITH CURRENT MEASURING PART

摘要

PURPOSE:To provide a breaker in which the current flowing through a power line can be measured easily. CONSTITUTION:At a service entrance of an external power line W, the external power line W is connected and an electric circuit is switched ON/OFF. The power line W is disconnected when an overcurrent higher than an allowable level flows. A current measuring section 10 comprising an annular magnetic core 11 surrounding an internal power line 6, a coil 12 wound around the core 11, and a measuring terminal 13 connected with the lead of the coil 12 and exposed to the outside of the case 1 is disposed while being insulated from the internal power line 6 and connected with the measuring terminal 13 thus determining the current flowing through the internal power line 6 immediately.