What is an intermediate relay
It is a type that can be used in electromechanical protection and automatic control systems to increase the number and capacity of contacts. Not only this, intermediate relays can also be applied to circuits to provide intermediate signal transfer functions. Whether it is from the structure or working principle, it is basically similar to the AC contactor.
However, there are certain differences. The main difference is that the main contact of the contactor can pass a large current, while the contact of the intermediate relay can only pass a small current, so it can only be applied to In the control circuit. And it usually does not have a main contact, because the overload capacity is relatively small, so all the intermediate relays are auxiliary contacts and the number is relatively large.