1. IN A PUSH BUTTON SWITCH CONTACTOR HAVING A PLUNGER ROD MOUNTED WITHIN A CYLINDRICAL HOUSING AND A CONTACT DRUM ATTACHED TO SAID PLUNGER ROD, A COIL SPRING POSITIONED TO BIAS SAID PLUNGER ROD TO AN OUTWARD POSITION, STATIONARY CONTACTS COOPERATING WITH SAID CONTACT DRUM, AN ARMATURE ATTACHED TO THE FREE END OF SAID PLUNGER ROD, A PERMANENT MAGNET, A CORE STRUCTURE AND A COIL WINDING MOUNTED FOR MAGNETIC COOPERATION WITH SAID ARMATURE, A PLURALITY OF SPACED LONGITUDINAL GROOVES IN ONE END OF SAID HOUSING AND A FIRST RADIAL EXTENDING PIN IN SAID PLUNGER ROD FOR COOPERATION WITH SAID GROOVES, A PLURALITY OF SPACED DETENTS IN THE OTHER END OF SAID HOUSING AND A SECOND RADIAL EXTENDING PIN IN SAID PLUNGER ROD FOR COOPERATION WITH SAID DETENTS, MEANS FOR ENERGIZING SAID COIL WINDING TO RENDER SAID PERMANENT MAGNET INEFFECTIVE IN ACCORDANCE WITH CERTAIN PREDETERMINED POSITIONS OF SAID PLUNGER ROD; WHEREBY DEPRESSION OF SAID PLUNGER ROD IN ITS CENTER LONGITUDINAL GROOVE POSITION WILL CONDITION CERTAIN OF SAID STATIONARY CONTACTS AND PERMIT SAID PERMANENT MAGNET TO HOLD SAID ARMATURE AGAINST THE BIAS OF SAID COIL SPRING FOR A PREDETERMINED TIME WHEREAS DEPRESSION OF SAID PLUNGER ROD WHEN POSITIONED IN ITS OTHER LONGITUDINAL GROOVE POSITIONS WILL CONDITION CERTAIN OTHER STATIONARY CONTACTS AND PERMIT SAID COIL SPRING TO RETURN SAID PLUNGER ROD TO ITS OUTWARD POSITION IMMEDIATELY UPON RELEASE.