Electromagnetic relay: An electrical relay that works by using the suction effect generated between the electromagnet core and the armature by the point in the input circuit.​​

Primary equipment refers to the equipment that directly undertakes the functions of power generation, transmission, transformation, distribution, and electricity consumption.

Relays are an important role in the application of automation control. In recent years, the market competition has become increasingly fierce,

Select the type of DC contactor The type of DC contactor should be selected according to the type of load current and the weight of the load, that is, AC load or DC load, light load, general load or heavy load.