What is electromagnetic contactor? The time relay is one of the important components in the automatic control system. When the electromagnetic coil of the contactor is energized, a strong magnetic field will be generated, which makes the static iron core generate electromagnetic attraction to attract the armature and drive the contact to act: normally closed contact is disconnected, and normally open contact is closed, both of which are linked. When the coil is powered off, the electromagnetic force disappears, and the armature is released under the action of the release spring to restore the contact: the normally closed contact is closed, and the normally open contact is disconnected. Let's talk about its classification.

1、直流接觸器

1. DC contactor

一般用于控制直流電器設(shè)備，線圈中通以直流電，直流接觸器的動(dòng)作原理和結(jié)構(gòu)基本上與交流接觸器是相同的。因?yàn)榭煽焖偾袛嘟涣髋c直流主回路和可頻繁地接通與大電流控制（某些型別可達(dá)800安培）電路的裝置，所以時(shí)間繼電器小編告訴大家它經(jīng)常運(yùn)用于電動(dòng)機(jī)做為控制對(duì)象﹐也可用作控制工廠設(shè)備﹑電熱器﹑工作母機(jī)和各樣電力機(jī)組等電力負(fù)載，并作為遠(yuǎn)距離控制裝置。

It is generally used to control DC electrical equipment. The coil is charged with DC. The operation principle and structure of DC contactor are basically the same as that of AC contactor. Because it can quickly cut off the AC and DC main circuit and frequently connect with the high current control circuit (some types can reach 800 Amperes), the time relay tells us that it is often used to control the motor as the control object, and can also be used to control the power load of factory equipment, electric heater, machine tool and various power units, And as a remote control device.

2、交流接觸器

2. AC contactor

主要有電磁機(jī)構(gòu)、觸頭系統(tǒng)、滅弧裝置等組成。常用的是CJ10、CJ12、CJ12B等系列。

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

因?yàn)榻涣麟姶沤佑|器的線圈一般采用交流電源供電，在接觸器激磁之後，通常會(huì)有一聲高分貝的“咯”的噪音，這也成為電磁式接觸器的特色。雖然80年代后，各國(guó)有發(fā)展交流接觸器電磁鐵的無(wú)聲和節(jié)電，基本的可行方案之一是將交流電源用變壓器降壓后﹐再經(jīng)內(nèi)部整流器轉(zhuǎn)變成直流電源後供電，但此復(fù)雜控制方式并不多見。

Because the coil of AC electromagnetic contactor is generally powered by AC power supply, after the contactor is excited, there is usually a high decibel noise, which has become the characteristic of electromagnetic contactor. Although after the 1980s, countries have developed silent and energy-saving AC contactor electromagnet, one of the basic feasible solutions is to reduce the voltage of AC power supply with transformer, and then convert it into DC power supply through internal rectifier, but this complex control mode is rare.

3、半導(dǎo)體接觸器

3. Semiconductor contactor

半導(dǎo)體接觸器使用改變電路回路的導(dǎo)通狀態(tài)和斷路狀態(tài)而完成電流操作的接觸器。

Semiconductor contactors use contactors that change the on state and open state of circuit circuits to complete current operation.

4、真空接觸器

4. Vacuum contactor

真空接觸器為接點(diǎn)系統(tǒng)采用真空消磁室的接觸器。

The vacuum contactor is the contact, and the vacuum degaussing chamber contactor is used in the system.

5、空氣式接觸器

5. Air contactor

主要由接點(diǎn)系統(tǒng)、電磁操動(dòng)系統(tǒng)、支架、輔助接點(diǎn)和外殼（或底架）組成。

It is mainly composed of contact system, electromagnetic operation system, bracket, auxiliary contact and shell (or underframe).

接觸器不僅能接通和切斷電路，而且還具有低電壓釋放保護(hù)作用。以上就是ABB時(shí)間繼電器小編*所分享的全部?jī)?nèi)容了，不知道大家有沒有都了解了呢？

The contactor can not only turn on and cut off the circuit, but also has the function of low voltage release protection. That's all the time relay Xiaobian shared. I don't know if you all understand it?