Based on the analysis on the remote control of relay protection and automatic device， a scheme for realizing remote switching-on and switching-off of relay protection and automatic device strap circuit is proposed using high voltage equipment remote control principle. In this scheme， electric impulse is transformed into position state shifting， and the condition self-holding function is realized in a mechanical interlocking manner. The one-to-one and one-to-many instances are analyzed according to the field conditions.