Is an electronic device used to cut - the circuit is similar to the switch. Contacts include The bars on the armature Armature and Coil is wrapped with coils. When the voltage to the coil (Energize) to induce a magnetic field. Armature bars being sucked to the surface. Making contacts, change the connection is reversed, ie, usually campy Off. Open and shut off the supply to the relay coil will return to normal.
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