Patent attributes
The respective proportionality constants of magnetic force by magnetic field producing portion for biasing the plug in the direction of insertion and resilient force by a spring mechanism for biasing the plug in the direction of extraction are adjusted in such a manner that the resilient force is greater than the magnetic force until the plug pin reaches an intermediate insertion position at which the plug pin comes into proximity to or separates from the socket contact, whereas the magnetic force is greater than the resilient force at a position at which the plug pin is inserted into a complete insertion position for a hot-line connection to the socket contact. The plug pin in the vicinity of the intermediate insertion position, at which there is a possibility of occurrence of an arc discharge, is ejected by the resilient force.
