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1．交流接触器。主要有电磁机构、触头系统、灭弧装置等组成。
1. AC contactor. It mainly consists of electromagnetic mechanism, contact system, arc extinguishing device and so on.
因为交流电磁接触器的线圈一般采用交流电源供电，在接触器激磁之後，通常会有一声高分贝的"咯"的噪音，这也成为电磁式接触器的特色。虽然80年代后，各国有发展交流接触器电磁铁的无声和节电，基本的可行方案之一是将交流电源用变压器降压后﹐再经内部整流器转变成直流电源後供电，但此复杂控制方式并不多见。
Because the coils of the AC contactor usually use AC power supply, after the shock of the contactor, there is usually a loud noise of high decibels, which also features the electromagnetic contactor. Although after 80s, countries have no sound and electricity saving for the development of AC contactor electromagnet, one of the basic feasible solutions is to convert the AC power supply transformer to the DC power supply after the converter is converted into DC power supply, but this complex control mode is not common.
2．直流接触器，一般用于控制直流电器设备，线圈中通以直流电，直流接触器的动作原理和结构基本上与交流接触器是相同的。因为可快速切断交流与直流主回路和可频繁地接通与大电流控制(某些型别可达800安培)电路的装置，所以经常运用于电动机做为控制对象﹐也可用作控制工厂设备﹑电热器﹑工作母机和各样电力机组等电力负载，并作为远距离控制装置。
The 2. DC contactor is generally used to control the DC electrical equipment. The coil is connected to the DC electric. The action principle and structure of the DC contactor are basically the same as the AC contactor. Because the device can quickly cut off the main circuit of AC and DC and frequently connect with the large current control (some type up to 800 An Pei) circuits, it is often used as the control object of the motor and can be used as the control of the power load of the factory equipment, the electric heater, the working machine and all kinds of electric power units, and is used as the remote control. System device.