mcb circuit breaker

Works

When the coil is energized, the electromagnetic suction static core, the moving core pull, due to contact with the moving core linkage system, so moving core driven by three runs Switchgear & Substation‍ while moving contacts, contact closure, thereby turning power supply. When the coil is de-energized, suction disappeared, moving core linkage relies in part on the reaction force of the spring and separation, the main contact is open, turn off the power.

Use connection

One: There is generally a three-phase contactor eight points, three inputs, three outputs, there are two control points. Corresponding output and input are easily able to see it. If you want to increase the self-locking, then you also need the output from a terminal point of the line to the control point Circuit breaker‍ on it.

Two: first of all should know the principles of AC contactor. He is outside the power applied to the coil to generate an electromagnetic field. Power-pull, the contact point after power is disconnected. Know principle, you should figure external power supply contact, i.e. two contacts coils, generally in the lower part of the contactor, and at each side. Several other inputs and outputs are generally in the upper part, to see that. Also note that the number of applied voltage power supply (220V or 380V), are generally marked must have. Also note that the point of contact is normally closed or normally open. If you electri calmete‍ have self-locking control, according to the principle haircut line on it.