What is the current relay current?
Current relay is the current control relay, when the current reaches the current relay action value, the current relay action. Current relay action value is called the action current.
Relay electromagnet through the current when the magnetic, the armor to attract down, so that the corresponding contacts connected or broken. Because the magnetic strength of the electromagnet is related to the magnitude of the current through which the current is large enough to produce enough magnetic force to draw the armature, the minimum value of this current is the pull-in current.
When the armature is pulled, because the armature and the electromagnet distance is reduced, the mutual magnetic force is strong, so the smaller current can maintain the pull state, the minimum current is to keep the current.
Keep the current less than the pull-in current
In the overcurrent relay, in order to enable the relay to start and close its contacts, it is necessary to increase the current through the relay coil to increase the electromagnetic torque, can make the relay action of the minimum current called the action current.
