Low voltage circuit breaker

Low voltage circuit breaker is also called automatic switch, air switch, not only can be used for normal don't frequent on and off the circuit, and when in the circuit overload, short circuit and loss of pressure failure, can automatically cut off the fault circuit, acmotortrading.blogspot.com effectively protect string followed by the electrical equipment, so widely used in the electric control circuit. Electrical control circuit to work normally, overcurrent trip 3 coil cannot be produced suction at the top of the swinging rod and, in the electrical control line fault and short circuit currents increase suction over-current trip coil, the coil at the top of the pendulum rod armature and around the pivot counterclockwise rotation, free trip mechanism rise and tripping, and the main contact the main contactor in tension spring on lower breaking circuit. 

In the electrical control circuit overload failure, single phase electric motor thermal trip 5 coils for heating to heating of the bimetallic strip above, because of the bimetallic strip the lower linear expansion coefficient of metal material is greater than the upper, become warped on bimetallic strip produced after heating, drove up free trip mechanism and make the main contact points to break off circuit. The control circuit of 5kw permanent magnet generator electric pressure loss occurs when the tripping device 6 coil to reduce the influence of pressure Dongfeng Electric loss and not off at the top of the armature, so armature rise in free trip mechanism rose, the main contactor trip and breaking the circuit. Shunt tripping device 4 as breaking circuit with remote control, controlled by the button 7, close the remote button, the shunt trip coils and armature at the top of the pendulum rod type, free trip mechanism, breaking circuit makes the main contact.