PURPOSE: To return the OFF condition of a main contact point of a main contact block to a central control device as the ON signal of an auxiliary contact point block by providing an auxiliary contact point block, in which the output of the contact point is tuned OFF at the time of setting a main contact point block.
CONSTITUTION: An auxiliary contact point block C is provided in the side of a main contact point block B. Switching of the auxiliary contact point block C is controlled in response to the switching of the main contact point block B simultaneously, and the auxiliary contact point block C is tuned OFF at the time of setting the main contact point block B. Consequently, since the auxiliary contact point block C is turned ON when the main contact point block B is tuned OFF, the output of the contact point at the time of ON of the auxiliary contact point block C is returned to a central control device within a return waiting period. This relay is therefor used for remote monitoring control system.
YOKOYAMA YOICHI
HONJIYOU TAKATOSHI
