Selection method of AC contactor

    Today, the manufacturer of AC contactor will tell you that it is suitable for controlling electric heating equipment, lighting equipment, welding transformer, cage induction motor, wound induction motor and capacitor.

    Electric heating equipment generally has resistance furnace, temperature regulating heater and other components, so the load current fluctuation of electric heating equipment is relatively small, so basically any AC contactor can be used to control point heating equipment.

    There are many types of lighting equipment. The starting current and starting time of different types of lighting equipment are not the same. The manufacturer of AC contactor suggests that you should select AC contactor according to the starting time and starting current of lighting equipment. The AC contactor used to control the welding transformer should be selected according to the power, current, short-circuit current and welding frequency of the transformer, so as to play a very good control role.

    When the AC contactor is frequently used in the motor, the AC contactor shall be selected according to the different types of motor. According to the experience of the AC contactor manufacturers for many years, the cage motor and winding motor shall select the direct acting AC contactor. The control capacitor should choose the capacity reducing contactor, otherwise the AC contactor will produce a large closing current when the capacitor is running, which will seriously damage the contact. No matter what kind of equipment selects AC contactor, we can select the type of AC contactor according to the load power, use category, operation frequency, working life, installation mode and other basis of the controlled equipment.