As the base, it has no coil, and the base like the time relay also has no coil. It is just a few connecting pieces, just like the daily terminal strip.

中间继电器底座

Intermediate relay base

中间继电器底座中每个角内部是有连接片引到端子上，在端子上会标注出各个连接片脚的序号，把中间继电器各个脚插入底座中，就可以根据序号来进行接线。

Inside each corner of the intermediate relay base, a connecting piece is led to the terminal, and the serial number of each connecting piece pin will be marked on the terminal. Insert each pin of the intermediate relay into the base, and wiring can be carried out according to the serial number.

就算没有底座使用导线直接连接中间继电器引出的各个脚也是可以使用的，这也就间接证明了底座中并没有线圈存在，那么中间继电器的线圈在哪呢？

Even if there is no base, it can be used to directly connect the pins led out by the intermediate relay with wires, which indirectly proves that there is no coil in the base. Where is the coil of the intermediate relay?

中间继电器

Intermediate relay

介绍中间继电器的线圈，就不得不介绍中间继电器，中间继电器交流接触器的原理是相同的，都是属于电磁继电器，使用线圈上电产生磁力吸合衔铁进行动作，从而对被控对象进行通断控制。

To introduce the coil of the intermediate relay, we have to introduce the intermediate relay. The principle of the AC contactor of the intermediate relay is the same. They all belong to the electromagnetic relay. The magnetic force generated by energizing the coil is used to pull in the armature for action, so as to control the on-off of the controlled object.

所以中间继电器确实有线圈存在，它的线圈我们肉眼是可以看得到的，因为中间继电器大部分设计的都是透明，非常便于观察，如果在商店以后没有听到中间继电器有吸合的声音，也没有观察到触点动作，很可能中间继电器线圈失效。

Therefore, the intermediate relay does have a coil, and its coil can be seen by our naked eyes, because most of the intermediate relays are designed to be transparent and very easy to observe. If the intermediate relay does not hear the sound of pulling in and the contact action is not observed in the store, it is likely that the intermediate relay coil will fail.

但使用中间继电器底座的时候一定要注意适配不同的中间继电器引脚的含义也许不一样，如果不是适配的底座很有可能出现接线错误。

However, when using the intermediate relay base, it must be noted that the meaning of adapting different intermediate relay pins may be different. If the base is not adapted, there is likely to be wiring error.