PURPOSE: To elevate dynamic sensitivity of a polarized electromagnet device and facilitate the structure and the assemblage thereof by passing magnetmotive flux of a coil through a permanent magnet to nullify the function of attractive force of an armature.

CONSTITUTION: The flux of a permanent magnet 4, 4' is represented by broken lines X and X, and when a coil 2 is supplied with current in a predetermined direction, the flux generates in the direction Y, Y denoted by a one-dot chain line. Of the fluxes generating in the four spaces (a)W(d) at this time, the fluxes (b) and (c) superpose and the fluxes (a) and (d) repulse. Therefore, armatures 7, 7' on both sides rotate counterclockwise (z) around (o), and the pole-face on the side (c) of an upper yoke 3 and the inner face of an armature 7 on the right facing the same, and the pole-face on the side (b) of a lower yoke 3' and the inner face of an armature 7' on the left side facing the same are attracted at the same time. The end part 17' of the left armature 7' contact with a projection 9 of movable frame 8, thereby to move the slidable frame 8 vertically in the direction R and to operate a switching mechanism part.