Timing operation can be achieved with the relay, interlock control, a variety of quantitative control and loss of pressure and undervoltage protection

AC contactors are widely used in automatic control circuit, is an automated control of low-voltage electrical appliances, mainly used frequently make or break off diplomatic relations, the DC circuit, control capacity, can use the main contact to open and close the circuit for remote operation, with auxiliary contacts to  mcb circuit breaker  commands, timed operation can be achieved with the relays, interlock control, a variety of quantitative control and loss of voltage and under-voltage protection. Currently, AC contactor mainly focused on its magnetic, electric and sports  Voltage stabilizer  analysis and optimization, particularly in the electromagnetic and electric analysis and optimization of the more popular and more practical significance. In this paper, with a different AC contactor auxiliary contacts, using experimental and simulation method, the AC contactor static  circuit breakers  properties of the system, combined with different auxiliary contacts of the reaction force characteristics of the electromagnetic system optimization.