Electromagnetic actuator

The present invention relates to an electromagnetic actuator capable of improving operational reliability by preventing deformation of components housed inside a housing due to a force applied from the outside, the electromagnetic actuator comprising: a hollow housing, the upper surface and the lower surface of which are open; a hollow housing provided inside the housing and integrally formed with a connector for transmitting a power source and a signal; a spool assembly provided inside the housing and connected to the connector; a core part which penetrates through the bobbin assembly, is combined in a manner of covering the housing and the upper end of the outer cover, and forms a working space in the interior; a cover part which covers the housing, the outer cover, and the lower end of the core part; a plunger movably provided in the working space; a rod coupled to the core so as to pass through the core and moved by the plunger; and a deformation prevention unit which is provided between the bobbin assemb