What electrical component is ka?

ka represents an intermediate relay; an intermediate relay is usually used to transmit signals and control multiple circuits at the same time, and can also be used to directly control small-capacity motors or other electrical actuators; the structure and working principle of an intermediate relay are similar to those of an AC contactor Basically the same, the main difference from AC contactor is that the number of contacts is larger and the contact capacity is small; when selecting an intermediate relay, the voltage level and number of contacts are mainly considered.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What kind of electrical component is ka?

KA stands for intermediate relay.

Intermediate relay: Intermediate relay is usually used to transmit signals and control multiple circuits at the same time. It can also be used to directly control small-capacity motors or other electrical actuators. The structure and working principle of the intermediate relay are basically the same as those of the AC contactor. The main difference from the AC contactor is that the number of contacts is larger and the contact capacity is smaller. When selecting an intermediate relay, the voltage level and number of contacts are mainly considered.

1. Intermediate relay

is used in relay protection and automatic control systems to increase the number and capacity of contacts. It is used to pass intermediate signals in control circuits.

2. The main difference between the intermediate relay and the contactor

The main contact of the contactor can pass large current, while the contact of the intermediate relay can only pass small current. Therefore, it can only be used in control circuits. It generally has no main contact because the overload capacity is relatively small. Therefore, all it uses are auxiliary contacts, and the number is relatively large. The definition of intermediate relay in the new national standard is K, and the definition of intermediate relay in the old national standard is KA. Generally powered by DC power supply. A few use AC power supply.

For more related knowledge, please visit the FAQ column!

The above is the detailed content of What electrical component is ka?. For more information, please follow other related articles on the PHP Chinese website!