Patent ID: 8570123

Claim:
An electromagnetic switch comprising: an excitation coil having a single coil that forms an electromagnet by energization; a movable core driven by magnetism generated in the excitation coil; a frame that accommodates the excitation coil and constitutes a part of a magnetic circuit of the excitation coil; an end plate that covers an opening end of the frame and is electrically connected with the frame; and diodes electrically connected in parallel with the excitation coil, wherein: the end plate has an end surface and a circumferential surface, the circumferential surface of the end plate being configured to touch an inner surface of the frame so as to cover the opening end of the frame: at least one terminal of each of the diodes is fixed to the end surface of the end plate and connected electrically to a ground via the end plate; and another terminal of the diode is fixed to the end surface of the end plate via a member that has no electro-conductivity.