Magnet switch for starter

A magnet switch has a coil (51) of a reduced size and a sufficiently large contact and does not have a rod running through the plunger (52) or the fixed iron core (54). A flange (53) and a joint (53a) are fixed at one end of the plunger (52). The arm of the flange (53) is connected to a holder via an elastic body (57). Movable contacts are pushed into the holder to be fixed at one end thereof. When the plunger (52) moves, the flange (53), the holder (58), and the movable contacts (72, 82) move somewhat simultaneously to work as a switch.