Reversible contactor is a mechanical reversible AC contactor used to control the forward and reverse rotation of high-power motor. It is composed of two standard contactors and a mechanical interlock unit. It integrates the advantages of AC contactor and reverse switch. It has simple, safe and reliable operation and low cost. It is mainly used for forward and reverse operation, reverse braking, constant operation and inching operation of motor.

可逆交流接触器工作原理

Working principle of reversible AC contactor

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动作,主触点闭合,和主触点机械相连的辅助常闭触点断开，辅助常开触点闭合，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,和主触点机械相连的辅助常闭触点闭合，辅助常开触点断开，从而切断电源。

When the coil is energized, the static iron core generates electromagnetic suction to pull the moving iron core in. Because the contact system is linked with the moving iron core, the moving iron core drives three moving contacts to act at the same time, the main contact is closed, the auxiliary normally closed contact mechanically connected with the main contact is disconnected, and the auxiliary normally open contact is closed, so as to connect 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, the auxiliary normally closed contact mechanically connected with the main contact is closed, and the auxiliary normally open contact is disconnected, so as to cut off the power supply.

安装使用维护

Installation, use and maintenance

安装前应检查有关的技术数据(如额定电压电流操作频率等是否符合要求)。

Relevant technical data (such as rated voltage, current, operating frequency, etc.) shall be checked before installation.

安装时，应该按规定条件安装，接触器线圈的接线端子A1符合应朝上方，符合人的视觉习惯。

During installation, it shall be installed according to the specified conditions, and the terminal A1 of the contactor coil shall face upward, in line with people's visual habits.

对有金属安装底板的接触器要妥善接地。

The contactor with metal mounting base plate shall be properly grounded.

接线端螺钉应拧紧，检查接线正确无误后，应在主触头不带电情况下，先使吸引线圈通电分合数次，试验动作可靠后，才能投入使用。

The terminal screw shall be tightened. After checking that the wiring is correct, the suction coil shall be energized, opened and closed for several times under the condition that the main contact is not charged, and can be put into use only after the test action is reliable.

使用时如发现有不正常噪音，可能是铁芯极面上有污物，请擦净极面。

If abnormal noise is found during use, it may be dirt on the pole surface of the iron core. Please wipe the pole surface.

使用中，应定期检查产品各部件，要求可动部位不卡住，紧固件无松脱，零部件如有损坏，应及时更换。

During use, all parts of the product shall be checked regularly. It is required that the movable parts are not stuck and the fasteners are not loose. If the parts are damaged, they shall be replaced in time.