Electrical breakdown can cause contact with physical damage, thereby reducing its life

For switching contactors, both contacts open or connected to current transmission circuit between the contacts will produce electrical breakdown phenomenon, this electrical breakdown in contacts gradually close to each other but have not generated when the contact. When gradually close contact, the electrical breakdown  Circuit breaker the contact is closed; contact gradually disconnected, the electric breakdown phenomenon  Electric transformer  maintain electrical breakdown condition is no longer met. Electrical breakdown can cause contact with physical damage, thereby reducing its life.  power transformers , electrical breakdown will produce high-frequency radiation, causes the line voltage or current surges occur signal, this signal becomes a surge affecting other sources of interference circuit to work.