The role of the electric switch has two aspects: the first is the function of the switch itself. It is the tube and off of electric circuit and short circuit or over current that can be automatically jump to cut off the power supply and it has the effect of protection circuit and electric equipment. The second is the social function that people in today's life can not be lack. It can give people's work, study and life convenient, also can provide insurance coefficient. Thus, once it has quality

more »

... problems, it will directly affect the quality of people's lives. Generally, the control class of low voltage electrical equipment mainly includes control relay and starter and other electrical equipment, power distribution type of low voltage electrical equipment mainly includes circuit breaker and switch control. Against such a situation, this article will focus on the performance analysis and design of low voltage electrical switch contact.