Auto Relays

Auto off relay control higher voltages or currents by using lower voltages or currents. When a certain voltage or current is applied to both ends of the electromagnetic relay coil, the magnetic flux generated by the coil passes through the magnetic circuit composed of the iron core, the yoke, the armature and the working air gap of the magnetic circuit. Under the action of the magnetic field, the armature is attracted to the pole face of the iron core. Therefore, the normally closed contact of the contact is pushed to be disconnected, and the normally open contact is closed. When the voltage or current at both ends of the coil is less than a certain value, and the mechanical reaction force is greater than the electromagnetic attraction force, the armature will return to the initial state, the normally open contact is disconnected and normally closed contact is on.

Key Features of Auto Relays



With charatstic of high switching load power, high shock and vibration resistance.

Power 12V.

Power consumption 1.6～2W.



Ambient temperature -40℃～125℃.

How To Test Auto Relays?

(1) A simple method for judging the working performance of the auto relays.

Turn on the ignition auto relay switch, and then use your ear or stethoscope to listen to the sound of the control relay, or feel the vibration of the relay with your hand. If there is vibration, then the auto relays is working well, the electrical appliance does not work due to other reasons. Otherwise, the relay is not working properly.