The key structure of the contactor
Vacuum contactor: Vacuum contactor is the contact system using vacuum degaussing chamber contactor.
one of the basic feasible solution is to replace the AC power transformer transformer, and then through the internal rectifier into a DC power supply, but this complex control and Rare.
After the 1980s, countries to study the exchange of contactor electromagnet silent and energy-saving
Semiconductor contactor: The semiconductor contactor is a contactor that performs current operation by changing the conduction state and the open state of the circuit circuit.
