working principle

当线圈通电时,静铁芯产生电磁吸力,将动铁芯吸合,由于触头系统是与动铁芯联动的,因此动铁芯带动三条动触片同时运行,触点闭合,从而接通电源。当线圈断电时,吸力消失, 动铁芯联动部分依靠弹簧的反作用力而分离,使主触头断开,切断电源。

When the coil is electrified, the static iron core generates electromagnetic force to pull in the moving iron core. Because the contact system is linked with the moving iron core, the moving iron core drives three moving contacts to run at the same time, and the contact is closed, so as to turn on the power supply. When the coil is powered off, the suction disappears, and the linkage part of the moving iron core is separated by the reaction force of the spring, so that the main contact is disconnected and the power supply is cut off.

使用接法

Use connection method

一:一般三相接触器一共有8个点，三路输入，三路输出，还有是控制点两个。输出和输入是对应的，很容易能看出来。如果要加自锁的话，则还需要从输出点的一个端子将线接到控制点上面。

1： General three-phase contactor has a total of 8 points, three input, three output, there are two control points. The output corresponds to the input, which is easy to see. If you want to add self-locking, you also need to connect the line to the control point from a terminal of the output point.

二: 应该知道交流接触器的原理。他是用外界电源来加在线圈上，产生电磁场。加电吸合，断电后接触点就断开。知道原理后，你应该弄清楚外加电源的接点，也就 是线圈的两个接点，一般在接触器的下部，并且各在一边。其他的几路输入和输出一般在上部，一看就知道。还要注意外加电源的电压是多少（220V或 380V），一般都标得有。并且注意接触点是常闭还是常开。如果有自锁控制，根据原理理一下线路就可以了。

2： First of all, we should know the principle of AC contactor. He uses an external power source to add to the coil to generate electromagnetic fields. The contact point will be disconnected after power on and power off. After knowing the principle, you should find out the contact of the external power supply, that is, the two contacts of the coil, which are generally at the lower part of the contactor and on each side. The other several input and output channels are generally on the top, which can be seen at a glance. Also pay attention to the external power supply voltage is how much (220 V or 380 V), generally marked with. And pay attention to whether the contact point is normally closed or normally open. If there is self-locking control, according to the principle of the line can be.

型号划分

Model division

在电工学上。接触器是一种用来接通或断开带负载的交直流主电路或大容量控制电路的自动化切换器，主要控制对象是电动机，此外 也用于其他电力负载，如电热器，电焊机，照明设备，接触器不仅能接通和切断电路，而且还具有低电压释放保护作用/。接触器控制容量大。适用于频繁操作和远 距离控制。是自动控制系统中的重要元件之一。通用接触器可大致分以下两类。

In Electrotechnics. Contactor is a kind of automatic switcher used to connect or disconnect the AC / DC main circuit or large capacity control circuit with load. The main control object is motor. In addition, it is also used for other electric loads, such as electric heater, welding machine, lighting equipment. Contactor can not only connect and cut off the circuit, but also has the function of low voltage release protection. The control capacity of contactor is large. Suitable for frequent operation and remote control. It is one of the important components in automatic control system. General purpose contactors can be roughly divided into the following two categories.

1交流接触器。主要由电磁机构、触头系统、灭弧装置等组成。常用的是CJ10、CJ12、CJ12B等系列。

1 AC contactor. It is mainly composed of electromagnetic mechanism, contact system and arc extinguishing device. CJ10, cj12, cj12b and other series are commonly used.

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。

DC contactor is generally used to control DC electrical equipment. The coil is charged with DC. The action principle and structure of DC contactor are basically the same as AC contactor.

但现在接触器的 型号都重新划分了。都是AC系列的了。。。

But now the models of contactors are divided again. It's all AC series...

1;AC-1类接触器是用来控制无感或微感电路的.

1; Ac-1 contactor is used to control non inductive or micro inductive circuit

2;AC--2类接触器是用来控制绕线式异步电动机的启动和分断的.

2; AC - 2 contactor is used to control the starting and breaking of wound induction motor

3;AC-3和AC--4接触器可用于频繁控制异步电动机的启动和分断

3; AC-3 and AC-4 contactors can be used to frequently control the starting and breaking of asynchronous motors

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