| 摘要 |
<p>PROBLEM TO BE SOLVED: To make assembly and adjustment easy and make the size compact by installing a trip apparatus, in which a test button and an earth leakage tripping solenoid are arranged adjacently, in an upper part of a case and installing an adjustment screw of a bimetal in the bottom face of the case. SOLUTION: When a handle is turned on or off in a condition that the tip of a cradle 6 is engaged with an upper end swinging type trigger plate 7, a movable contactor 22 is driven by a toggle mechanism in which a drawing spring 20 is installed. Also, when the tip of the cradle 6 comes off an engagement hole due to the swinging of the plate 7, it rotates on a pin 19 and the handle is rotated by the spring 20 force to the trip position and the contactor 22 is driven to shut a circuit. The plate 7 is swung by bending of a bimetal 8, or pushing of a test button by an earth leakage tripping solenoid 15 of a trip apparatus set 5, or sucking of a tripping piece 13 based on current leakage detection by ZCT 16.</p> |
